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Why does my 2002 Chevy Silverado not start?

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Why does my 2002 Chevy Silverado not start?

If you’re in a situation where you turn the key in your 2002 Chevy Silverado and the truck won’t start, a number of potential explanations exist for why it may not start. By checking several key components in your Silverado, you can pinpoint the problem yourself and possibly fix it.

How can I tell if my Chevy Silverado is running?

Check to make sure your Silverado is getting fuel to the engine, which will require a two-part test. First, attach a fuel pressure gauge in the fuel line before the fuel filter. Crank the engine while someone else takes a reading, which should be 50 to 60 PSI.

How often do you change spark plugs on Chevy Silverado?

Depending on which engine you have in your Silverado, you will have either six or eight spark plugs. Chevrolet recommends changing the spark plugs on your Silverado every 60,000 miles. Check to make sure your Silverado is getting fuel to the engine, which will require a two-part test.

If you’re in a situation where you turn the key in your 2002 Chevy Silverado and the truck won’t start, a number of potential explanations exist for why it may not start. By checking several key components in your Silverado, you can pinpoint the problem yourself and possibly fix it.

What kind of Chevy truck won’t start?

In this video we encounter a condition where a 2002 Chevy Silverado ( Similar to GMC Sierra ) pickup has a symptom of the engine cranks over but won’t start…. In this video we encounter a condition where a 2002 Chevy Silverado ( Similar to GMC Sierra ) pickup has a symptom of the engine cranks over but won’t start….

Check to make sure your Silverado is getting fuel to the engine, which will require a two-part test. First, attach a fuel pressure gauge in the fuel line before the fuel filter. Crank the engine while someone else takes a reading, which should be 50 to 60 PSI.

Depending on which engine you have in your Silverado, you will have either six or eight spark plugs. Chevrolet recommends changing the spark plugs on your Silverado every 60,000 miles. Check to make sure your Silverado is getting fuel to the engine, which will require a two-part test.

In this video we encounter a condition where a 2002 Chevy Silverado ( Similar to GMC Sierra ) pickup has a symptom of the engine cranks over but won’t start…. In this video we encounter a condition where a 2002 Chevy Silverado ( Similar to GMC Sierra ) pickup has a symptom of the engine cranks over but won’t start….

Why does my Chevy Silverado not accelerate at high RPMs?

If your Silverado won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue. Here are the most common cause of acceleration with the RPM’s going up: 1. Transmission Fluid Low

Why does my Chevy Silverado not transfer power?

If your Silverado is too low on transmission fluid, it’ll will no longer be able to transfer power to the rear wheels. The power goes to the torque converter, and that’s the end of the line. You should check the transmission fluid immediately.

How to deactivate a PassLock on a 2002 Chevy Silverado?

Turn off the ignition and remove the key if the key is already in the truck. Open the Chevrolet door and wait until the Security light stops flashing. This light informs you that someone has recently tried to start the engine without the right key.

When does a Silverado 2500HD won’t start?

Ran like a champ from June to November.. The minute the cold rainy weather came, have now had 5 times the truck completely dead, no start, no click, no fuel pump, Nothing. Couple of times, turn the key, put the truck in drive, back in to park, turn the key off, turn the key back on, truck starts up.

Is there a 2004 GMC 2500HD with no fuel pump?

Recently purchased a 2004 GMC 2500HD, 84000 miles on it. Ran like a champ from June to November.. The minute the cold rainy weather came, have now had 5 times the truck completely dead, no start, no click, no fuel pump, Nothing.

Why is my Chevy 2500HD no start no crank?

Finally I ended up having it towed to the Chevy dealer I bought it from. First they said they believed it was a communication problem with the computers, but wasn’t exactly sure what was wrong. Later in the day they called and said the fuse box was the culprit, and I needed a new one. I had them put it in, and everything seemed ok.

Why does my Chevy Silverado want to turn over?

Truck wants to turn over but will act as if is starving for fuel,wait ten minutes, it start. Been happening frequently lately. I also was told it was the security system Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail.

What does it mean when your car won’t start?

An intermittent no-start condition references any time where starting is possible sometimes, and other times the engine will not start. This implies that the difference between starting and failure to start is not understood.

What’s the difference between starting and failure to start?

This implies that the difference between starting and failure to start is not understood. When inserting the key, the engine may crank, the engine may sound like it is ‘trying’ to start, clicking may be heard, or nothing may happen at all.

Why does my car not start when the key is turned?

The vehicle simply will not crank or make any nosie when the key is turned. These is no clicking. The lights come on as expected. If we try to start it 10-20 minutes later sometimes it starts right up. never had it die once it starts. We’re replaced the battery, had it to the dealer 3 times]

Why does the keyswitch not turn the starter?

They keyswitch may not be sending the signal to tell the battery to send juice to the starter, the battery may not be able to send enough power to the solenoid to turn the starter, the solenoid may not be ramping up the power given to it, or the starter may not be functioning and able to turn.

What happens to the engine when you turn the key?

Turning the engine causes the pistons to rise and fall in the engine block, activates fuel and spark, and (hopefully) ignition of the engine so that it begins running on its own without the starter motor turning it.

Why does my car not start when I turn the key?

A low or bad battery can be easily tested with a standard ohm meter or at any auto repair shop or parts store (they usually do this free of charge). A loose battery cable connection is often the simplest of causes for a non-start. A bad starter solenoid means replacement is needed.

They keyswitch may not be sending the signal to tell the battery to send juice to the starter, the battery may not be able to send enough power to the solenoid to turn the starter, the solenoid may not be ramping up the power given to it, or the starter may not be functioning and able to turn.

Turning the engine causes the pistons to rise and fall in the engine block, activates fuel and spark, and (hopefully) ignition of the engine so that it begins running on its own without the starter motor turning it.

Why does my Car start when the engine is not cranking?

If the engine does not crank, and position, then this is most likely a problem in the Passlock system. The ignition cylinder is also know as the Passlock Sensor. This is what sends the security data to the Body Control Module (BCM) to allow the car to start. This part failing is very common on this car.

Is there a problem with my Chevy Silverado?

Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail. Then, turn it one more time and it starts. Then the next 15 starts, no problem. Sometimes hot engine, sometimes cold. UPDATE: 2-6-14; I sold the truck to my father. He changed the starter.

What does it mean when a Chevy truck won’t start?

It has spark as evidenced by putting an old spark plug into a spark plug wire and grounding the plug After spraying a small amount of starting fluid into the air intake tube, the engine starts for just a moment, then dies Three or four years ago the truck had the Reduced Engine Power warning problem.

Why does my truck not start after sitting for a long time?

This can happen when the check valve in the fuel pump assembly leaks pressure back into the fuel tank. The longer the truck sits the harder it is to start. Try this, turn the key on for 2 seconds then off, do this two more times then try and start it.

How often should you change the fuel filter on a Chevy Silverado?

If the reading is within range, perform the same test in the fuel line in front of the fuel filter, which is along the frame rail on the driver’s side. If the pressure is lower than the desired 50 to 60 PSI, replace the fuel filter. Chevrolet recommends changing the fuel filter every 60,000 miles.

Is there a Quadrasteer for the 2002 Chevy Silverado?

Quadrasteer is scheduled to become available for the Silverado during the 2002 model year. This report covers light-duty versions of the Silverado only, which come in 1500 (half-ton) and 2500 (three-quarter-ton) series. Heavy-duty models are covered separately in the Silverado HD report.

How do you change the key on a Chevy Silverado?

Insert your programmed Silverado key into the ignition hole. Turn the key clockwise until the engine cranks. As soon as the engine cranks up, be sure to release the key. If the engine will not crank then you might have an error with your key. Take the key to your local Chevrolet dealer and have them reprogram it to your particular Silverado.

What are the fuses on a 2002 Chevy Silverado?

Repair Topics > Fuses > Chevrolet > 2002 Chevrolet Silverado… IGN A Fuse #3 40A Starter Relay, Ignition Switch IGN 1. TURN. SEO IGN Fuses PARK LP Fuse #12 30A Park Lamp Relay. Healamp and Panel Dimmer Switch Park Lamps STOP LPS Fuse #14 20A VEH STOP and CHMSL Fuses. Trailer Wiring (LH.

Turn off the ignition and remove the key if the key is already in the truck. Open the Chevrolet door and wait until the Security light stops flashing. This light informs you that someone has recently tried to start the engine without the right key.

Where did the 2002 Chevy Silverado 1500 come from?

1st owner purchased on 02/15/02 and owned in PA until 03/20/16 • 2nd owner purchased on 04/02/16 and owned in PA until 07/20/20 • 3rd owner purchased on 10/14/20 and owned in OH until 04/16/21. 1st owner drove an estimated 7,018 miles/year • 2nd owner drove an estimated 6,120 miles/year • 3rd owner drove an estimated 0 miles/year.

What makes a 2000 Chevy 4.3 truck not start?

7,686 satisfied customers 2000 Chevy 4.3 truck start won’t start runs little rough 2000 Chevy 4.3 truck start won’t start runs little rough fuel pump new think it’s fuel pressure regulater …  read more Roy Belding 7,686 satisfied customers

What should I do if my 2000 Chevy Silverado dies?

2000 chevy silverado starts then dies repeatedly has a new fuel pump fuel pressure regulater and mass air senser 2000 chevy silverado starts then dies repeatedly has a new fuel pump fuel pressure regulater and mass air senser – Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.

Is the Silverado 2500 HD a good camper?

Worked great on my 2007 Silverado 2500 HD Truck Camper. Do not use a tee that fills both at the same time. As you go around a corner the air is pushed to the other side. The handling is not as good as with them separated. I tried both ways.

What kind of air valve for GMC 2500HD?

I installed these on my 09 GMC 2500HD to assist towing a 29′ 5th wheel. VERY happy with the improvement over bounce and harshness of bumps and leveled the truck perfectly. I also installed a T and only one air valve so they would always have equal pressure.

Why is my speedometer not working on my Silverado?

I bet they plugged in the speed sensor connectors to the wrong speed sensors. They easily reach each other, and can easily of been swapped, Been there done that, and got a t-shirt.. ^^^^There is the best answer you will find on this site.

Why does my speedometer not work on my GMC Sierra 1500?

– CarGurus Speedometer doesn’t work and transmission doesn’t shift gears. The speedometer stays at 0 all the time. When the transmission is in drive it won’t come out of 1st gear. Reverse works fine, and if I manually put the transmission in 1st or 2nd it works fine.

Why is the Speedo not working on my Duramax?

Speedo isn’t working and the service Brake system light is on along with the parking brake indicator and the abs lamp. Still isn’t showing the gear indicator. What other speed sensors does this truck have?

Why does my speedometer stay at 0 all the time?

The speedometer stays at 0 all the time. When the transmission is in drive it won’t come out of 1st gear. Reverse works fine, and if I manually put the transmission in 1st or 2nd it works fine. 85 people found this helpful. I replaced both output speed sensors, and also swapped them around with the old ones, no luck.

When did the Speedo stop working on my Dodge Ram?

53 people found this helpful. I have a 2001 Dodge Ram 3500 Van and about 9 months ago the speedo stopped working, the AC stopped working (blowing cold and vent blowing on HIGH), the ABS and Brake light came on steady and the check engine light came on. It also pulsed or surged at times when driving.

What happens when a Chevy Silverado engine shut off?

The engine shut off, brakes went out, steering locked, all electrical shut off. The truck was dead for approx 4 seconds when it kicked back on on its own. The truck continued down the road like nothing had happened.

Are there any problems with the Chevy Silverado 1500?

Chevrolet Silverado 1500 owners have reported 23 problems related to engine shut off without warning (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Chevrolet Silverado 1500 based on all problems reported for the Silverado 1500.

The engine shut off, brakes went out, steering locked, all electrical shut off. The truck was dead for approx 4 seconds when it kicked back on on its own. The truck continued down the road like nothing had happened.

Chevrolet Silverado 1500 owners have reported 23 problems related to engine shut off without warning (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Chevrolet Silverado 1500 based on all problems reported for the Silverado 1500.

What causes a Chevy 6.0 Vortec engine failure?

1. Throttle body sensor failure – Chevy 6.0 The throttle position sensor (TPS) is located on the throttle body and is responsible for controlling air flow into the engine. The TPS sensor monitors how open the throttle is (ie. how much air is entering the engine) and relays the information back to the ECU.

What happens when your engine shuts down while driving?

No problems on the message center, everything works on the dash, RPMs are at 0, and now im coasting. Several hundred yards later, engine starts back up on its own. I dont even have to turn the key. Well today I was sitting still in traffic and it shut off on me again. At a dead stop.

Why does my GMC engine start but not run?

Repair guides and support for cars, trucks, and SUVs manufactured by GMC. Answered! View the answer I have this problem too Is this a good question? An engine will start but not run when the fuel runs out .

1. Throttle body sensor failure – Chevy 6.0 The throttle position sensor (TPS) is located on the throttle body and is responsible for controlling air flow into the engine. The TPS sensor monitors how open the throttle is (ie. how much air is entering the engine) and relays the information back to the ECU.

Repair guides and support for cars, trucks, and SUVs manufactured by GMC. Answered! View the answer I have this problem too Is this a good question? An engine will start but not run when the fuel runs out .

When did the 6.0 liter Chevy engine end?

The 6.0-liter Chevy/GM V8 saw its final breaths in the year 2019 before it was axed and officially replaced with the Ecotec3 6.2-liter V8 that had slowly been taking over the truck and SUV lineup since 2013. Which Chevy 6.0 is Right for You?

What kind of engine does GMC Sierra 2500HD have?

Recent Arrival! 2002 GMC Sierra 2500HD SLE AT-HOME DELIVERY AVAILABLE, ONLINE PRE-APPROVAL, SIGHT UNSEEN APPRAISALS, Passed Dealer Safety Inspection, Duramax 6.6L V8 Turbodiesel, 5-Speed Automatic with Overdrive, 4WD.

Why does my Silverado start with a jump?

THANK YOU IN ADVANCE!!!! You need to load test battery to begin with. If it will start with a jump it is most likely the battery. Not sure I follow everything there but first if you jump it off then the solenoid has to be working. You could have a bad connection to the battery post itself or a bad or weak battery.

Why are the dash lights not working on my Chevy Silverado?

When the AAA mechanic checked the battery it was fine. But the dash lights would not come no when the key was turned. Then they did but there was no effert to start. The engine might click but nothing else. The dome lights were bright and working. It was putting out a full voltage the mechanic said. But again the dash lights would not come on.

What’s the gas mileage on a 2002 Chevy Silverado?

The EPA-estimated gas mileage for the 2002 Chevrolet Silverado 1500 is 15 mpg for city travel and 19 mpg on the highway. How much is a 2002 Chevrolet Silverado 1500 worth?

Why is my Chevy Silverado 2500 not starting?

While there are a variety of reasons your Chevrolet Silverado 2500 HD won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter.

Why does my GMC Silverado have no crank?

This is a fix for a known electrical issue with the 2003-2007 C/K series GM Trucks where a bad ground causes multiple issues. Such as no start, no crank, intermittent no gauges, and sometimes the theft light would stay on, and the parking lights would stay on.

Why does my car starter not turn on?

Doesn’t take much juice to click the solenoid, but it takes a lot of juice to turn the starter and turn over the engine. The other thing is it is an intermittent problem on the vehicle, so if the starter was intermittently acting up when installed, it could also be intermittently acting up when tested at the auto parts store.

What to do if your fuel pump won’t turn over?

Replaced fuel pump turns over like new but won’t start fu… Replaced fuel pump new engine but still won’t turn over what else could it be My car has 157000 miles. My car has an automatic transmission. Of course, confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting.

How is the gas shut off on a Chevy Silverado?

There are two ways the gas can/will be shut off on a Silverado. She didn’t say anything about a crash, which deploys an e shut off to prevent fire, I dismissed that and went with anti theft ’cause I figured it just would not start….

Why does my Chevy Spark Plug not start?

Chevrolets have a common issue with fuel filters getting clogged. You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start.

What to do if your fuel pump wont start?

For future reference, I had this same problem when replacing the fuel pump on my 2002 s10 4.3L. Searched forever for an answer. It turns out that in order to remove the bed of the truck, you must disconnect the ground for the fuel pump, which attaches in the rear on the drivers side.

There are two ways the gas can/will be shut off on a Silverado. She didn’t say anything about a crash, which deploys an e shut off to prevent fire, I dismissed that and went with anti theft ’cause I figured it just would not start….

Where is the fuel pump reset switch location on the Chevy?

The fuel pump reset is snugly positioned in the passenger footwell. If the switch needs to be replaced, You can expect to pay between $30 and $138 for parts. The fuel pump reset switch can be found on the toe-board, to the right of the transmission hump, in the passenger-side footwell.

Chevrolets have a common issue with fuel filters getting clogged. You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start.

It has spark as evidenced by putting an old spark plug into a spark plug wire and grounding the plug After spraying a small amount of starting fluid into the air intake tube, the engine starts for just a moment, then dies Three or four years ago the truck had the Reduced Engine Power warning problem.

What causes a GMC 2500 to die in a few seconds?

Just diagnosed a gmc 2500 with a similar problem. Good fuel pressure, starts, runs for about 7 seconds, dies after a sudden drop in fuel pressure. I ruled out the fuel pressure regulator by clamping off the return line.

Why does my diesel truck not start up?

Read on another thread where the truck would not start,turned out to be cps,dealer said a couple bolts backed out and fell into the pan. First- these trucks do not have a fuel pump- the CP3 pulls fuel from the tank and then pressurized by the CP3 pump to the injectors.

Why does my Car start then die in a few seconds?

CELS kept pointing to the coils, after 3 sets I figured that was not the problem. Check with spark tester, coils, wires and plugs all good. Map and Mat good, and finally accepted it must be the PCM. The car run good in the heat, and terrible in cooler wet weather.

Just diagnosed a gmc 2500 with a similar problem. Good fuel pressure, starts, runs for about 7 seconds, dies after a sudden drop in fuel pressure. I ruled out the fuel pressure regulator by clamping off the return line.

Read on another thread where the truck would not start,turned out to be cps,dealer said a couple bolts backed out and fell into the pan. First- these trucks do not have a fuel pump- the CP3 pulls fuel from the tank and then pressurized by the CP3 pump to the injectors.

CELS kept pointing to the coils, after 3 sets I figured that was not the problem. Check with spark tester, coils, wires and plugs all good. Map and Mat good, and finally accepted it must be the PCM. The car run good in the heat, and terrible in cooler wet weather.

Is the 2006 Diesel D / A running fine?

My 2006 2500HD D/A was running fine this past weekend. I parked it in my driveway on Saturday. I moved it to my side driveway on Sunday, took about 5 minutes of running. Shut it off and came back a few minutes later to restart it.

Which is better a Silverado 1500 HD or 6.2 HD?

If it is 6 Bolt rims (2007 or newer) then they are not a HD but actually a Max Trailer Tow pkg. with the 6.2 v-8 and 7300 GVW with the ability to tow 10700 lbs. in the 4×4 pkg. The 6.2 engine will get better fuel economy (it is mated to a 6 sp. heavy duty trans.) and have more power (403 HP as opposed to 335 max hp on the 6.0).

How to start a new Chevy Silverado 1500 question?

Start a new Chevrolet Silverado 1500 question. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.

What does HD stand for on a Chevy Silverado?

Not really a whole lot of difference, The HD stands for ‘Heavy Duty’. On HD trucks, the body with be raised more than an non HD truck as well as some other minor differences like standard rear axle ratio and tow packages (i.e shocks, spring rates etc). 21 people found this helpful.

Can a Chevy Silverado start or crank over?

Chevy Silverado does not start or crank over. Chevy Silverado does not start or crank over. Welcome to JustAnswer. The pcm actually commands the starter to turn over on this vehicle.

Why are the cranks on my 2006 Chevy Silverado not working?

SOLVED: 2006 chevy silverado cranks but wont start. – Fixya 2006 chevy silverado cranks but wont start. Towed to repair shop. Diagnostics said it was electrical. Replaced a #7 20 amp fuse. Kept at shop for 3 days. Started ok.

How to turn off starter on Chevy Silverado?

1 Turn OFF the ignition. 2 Disconnect the PCM harness connector. 3 Connect a DMM between the starter enable relay control circuit of the PCM harness and a good ground. 4 Turn the ignition to the START position.

Why does my GM car say no start no crank?

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail. Then, turn it one more time and it starts. Then the next 15 starts, no problem. Sometimes hot engine, sometimes cold. UPDATE: 2-6-14; I sold the truck to my father. He changed the starter.

Why does my truck wont start when I Turn on the ignition?

There are 2 very common issues that can give you these symptoms. The first is a bad connection where the battery cable bolts to the stud on the underhood fuse box. The second is a faulty ignition switch. Both items are extremely common. Check the stud first, if its OK, then replace the ignition switch and see if you are fixed.

How to diagnose a no start no click on GM vehicle. If you have a late model GM vehicle and turn the key only to hear nothing, you’ll most likely think you have a dead battery—and you may. But a no start, no crank, no click condition can be far more involved than that.

There are 2 very common issues that can give you these symptoms. The first is a bad connection where the battery cable bolts to the stud on the underhood fuse box. The second is a faulty ignition switch. Both items are extremely common. Check the stud first, if its OK, then replace the ignition switch and see if you are fixed.

What should I do if my Silverado engine dies?

Update as of today: 1) the truck hasn’t started and kept running since last week. It only starts right up, then dies immediately. 2) I got a fuel pressure tester and the pressure is at 53 with key on, and maintains pressure when it starts (then dies).

Update as of today: 1) the truck hasn’t started and kept running since last week. It only starts right up, then dies immediately. 2) I got a fuel pressure tester and the pressure is at 53 with key on, and maintains pressure when it starts (then dies).

What to do when your GMC Truck won’t start?

Try turning your key to the run position a few times (with out starting). Then try to start it. If it starts, sounds like what mine did. I replaced the fuel pump assembly and that fixed the problems. Very common problem.

What kind of engine does a Chevy Silverado have?

GM 6.0L V8 Vortec L96 Engine Specs Type: 6.0L Gen IV V8 Small Block E85 Flex Fuel: Chevrolet Express (Passenger,Cargo), GMC Chevrolet Silverado HD < 10,000 lbs: 360 hp (268 kW) @ 5400 RPM SAE Certified GMC Sierra HD < 10,000 lbs: 360 hp (268 kW) @ 5400 RPM SAE Certified

How many spark plugs are in a Chevy Silverado?

Remove the spark plugs with a spark plug wrench and visually inspect the tips of each plug. If they are dirty or fouled up with an excessive carbon build-up, replace each one. Depending on which engine you have in your Silverado, you will have either six or eight spark plugs.

Are there any problems with the Chevy 4.8 Vortec engine?

You are an automotive engineer, or you are a Chevy truck enthusiast to be reading about the Chevy 4.8 Vortec engine problems. The thing is that the bigger the vehicle engine, the more power they take. The 4.8 Vortec engine is now the order of the day because of its price and its availability in standard wrecking yards.

Can a faulty knock sensor cause a 4.8L Vortec to go bad?

On the 4.8 Vortec, the knock sensor is known to go bad or become faulty and throw check engine lights. When you have a faulty knock sensor, the engine thinks it needs to alter timing despite there being no timing issues, which can lead to a number of performance issues. 4.8L Vortec Faulty Knock Sensor Symptoms

What happens if crankshaft sensor fails GM 4.8L?

If the crankshaft position (CKP) sensor fails, in your 4.8L, 5.3L or 6.0L GM vehicle, it’s not gonna’ start. In this article, I’ll show you how to test it using a multimeter (in Volts DC mode).

You are an automotive engineer, or you are a Chevy truck enthusiast to be reading about the Chevy 4.8 Vortec engine problems. The thing is that the bigger the vehicle engine, the more power they take. The 4.8 Vortec engine is now the order of the day because of its price and its availability in standard wrecking yards.

On the 4.8 Vortec, the knock sensor is known to go bad or become faulty and throw check engine lights. When you have a faulty knock sensor, the engine thinks it needs to alter timing despite there being no timing issues, which can lead to a number of performance issues. 4.8L Vortec Faulty Knock Sensor Symptoms

Can a bad ignition switch keep a Chevy Silverado from starting?

A bad ignition switch can cause your Silverado not to start at all. And, it can keep your Silverado from starting in a couple of different ways. The first is when the starter cranks, but the bad ignition switch doesn’t turn on the fuel pump or ignition.

Why does my Chevy Silverado have no spark?

Common causes for no spark are a weak battery, indicated by a slow-turning starter, a faulty ignition coil or a wet ignition system. Less common problems are faulty sparkplugs, broken or disconnected coil wires or broken wires in the ignition system.

What’s the problem with my Chevy Silverado 1500?

When it decides to act right, all is will. Anyone else found a solution? Chevy silverado 1500 2004. The same problem, random intermittent starting. I had had this problem before about 5 times and each time I disconnected and reconnected the negative battery cable it started fine. This time that didn’t work.

When do you Know Your Chevy Silverado ignition switch is bad?

If your Chevy Silverado is starting right up, but then immediately dies, that is a very good indication that the ignition switch is bad. Here’s what happens. You aren’t getting power to the ignition or fuel pump while the key “rests” in the run position. But, you are getting it when the starter is engaged.

Why is my Chevy Silverado transmission not working?

But the transmission is a different story. Chevy Silverado transmission problems show up first as shift flares while you’re accelerating. Then the Check Engine light comes on for ‘loss of prime’ codes. Soon after, the transmission won’t engage forward, reverse, or both. Again, lack of maintenance is often the culprit.

What does it mean when your car starter is not working?

Start your engine and listen carefully to the sounds it is making. If there is a loud click, it means the starter relay is working correctly. A weak click means there is a loose connection. Check the wires that connect to your starter solenoid and tighten them.

Why is my car not starting when I Turn on the ignition?

You pop into your garage in a hurry, but the car will not start when you turn on the ignition key. You can hear the starter spinning, but it’s not engaging with the flywheel. What could be wrong? Here is a more detailed list of the 5 most common causes why your starter won’t engage.

What happens when the starter relay is on?

When the starter relay is on, the starter rotor will start to move firing up the engine. The first thing you must check is if your battery has enough voltage to power up your car’s engine.

What to do if your car starter won’t engage?

The battery powers the starter, and if it is not working, the starter will fail to engage completely. Charge your car battery fully, and you can even try to replace the car battery if you have another one you know works.

What causes a car to have a no start problem?

A blown fuse in the starter circuit could be the cause of a no-start problem. Broken or corroded wiring – Damaged or dirty wires to the battery or to the starter solenoid (or wires that are loose) can prevent sufficient power from reaching the starter.

Can a blown fuse cause a starter to not start?

Blown fuse – Sometimes the simplest explanation is the best one. A blown fuse in the starter circuit could be the cause of a no-start problem. Broken or corroded wiring – Damaged or dirty wires to the battery or to the starter solenoid (or wires that are loose) can prevent sufficient power from reaching the starter.

Common causes for no spark are a weak battery, indicated by a slow-turning starter, a faulty ignition coil or a wet ignition system. Less common problems are faulty sparkplugs, broken or disconnected coil wires or broken wires in the ignition system.

How can I tell if my Chevy Silverado is starting?

Check the compression with a compression gauge. Use a spark checker to see if it has spark. Put a timing light on it and see what it shows. Use a fuel pressure gauge to see if it is getting fuel pressure. Is the air filter/tubing plugged? Is the catalytic converter plugged?

What are the problems with the Chevy 8.1 L V8 engine?

Carbon Buildup The Chevy 8.1-L V8 engine has a problem with carbon building up in the throttle body. The electronic throttle control in the Chevy 8.1-L V8 engine can lose the signal between the accelerator pedal and throttle body. A hose runs on both ends of the throttle body of a Chevy 8.1-L V8 engine.

What’s the gas mileage on a Chevy 8.1?

Obviously not an “engine problem” but potentially one of the most disliked aspects of the 8.1 engine is the gas mileage! With city driving, you can expect single digit numbers from 7-9mpg and highway will usually range from 12-14mi.

What’s the problem with the throttle on a Chevy 8.1 L?

Electronic Throttle Control. The electronic throttle control in the Chevy 8.1-L V8 engine can lose the signal between the accelerator pedal and throttle body. The throttle control normally sends a signal from the gas pedal and into the throttle body, telling it how much power is required.

Can a Chevy Silverado 1500 start and run?

Although I tried to start it multiple times over a couple weeks I gave it one last try after I called the tow truck. It started right up and engine stayed running like it was supposed to. No more problems for almost a year until about a week ago. I did nothin to fix it a year ago.

How often do you need to change spark plugs on a Chevy 8.1?

The 8.1L Vortec is known for burning oil and leaving some laying around which results in the plugs becoming fouled. On the Chevy 8.1, the spark plugs need to be changed every approx. 25,000 miles. If you have serious oil burn issues then this could be more frequent as well. 5. Excessive Oil Consumption

Obviously not an “engine problem” but potentially one of the most disliked aspects of the 8.1 engine is the gas mileage! With city driving, you can expect single digit numbers from 7-9mpg and highway will usually range from 12-14mi.

Are there any problems with the Chevy 8.1L Vortec?

The 8.1L was considered the diesel-alternative in the Chevy line and was designed to be big enough to produce comparable power and towing capabilities to that of the diesels. 1. Faulty Crankshaft Position Sensor – Vortec 8100 Out of all the problems on my list, this one is probably the most common and biggest pain.

Why did my 2004 Duramax engine not start?

My 2004 Duramax started and then died like it was out of fuel. Now it won’t start. I have about 1/4 tank of fuel, tried priming it until the batteries died.

Why does my car not start on the first attempt?

Car won’t start on first attempt, takes several tries the… The vehicle will turn over but will not start until after two or three attempts. When the key is in the ignition and turned all the way to the right and I let go of it it still stays there and attempts to keep starting without me holding the key.

Try turning your key to the run position a few times (with out starting). Then try to start it. If it starts, sounds like what mine did. I replaced the fuel pump assembly and that fixed the problems. Very common problem.

What causes a GMC truck to turn over but not start?

If the engine starts up normally after doing that, it means that fuel pressure is bleeding off and the fuel pump needs to prime the lines before it can start. It can bleed off from one of two places. 1. Fuel pressure regulator has an internal leak, and fuel is bleeding off back to the tank though the return line. 2.

What does intermittent no start mean on a car?

Share it! An intermittent no-start condition references any time where starting is possible sometimes, and other times the engine will not start. This implies that the difference between starting and failure to start is not understood.

Share it! An intermittent no-start condition references any time where starting is possible sometimes, and other times the engine will not start. This implies that the difference between starting and failure to start is not understood.

Why does my Car start intermittently after starting?

In this case, it’s important that you contact a mechanic as soon as possible so they can determine what is causing the intermittent contact. In many cases an intermittent starting problem is linked to a bad wire connection that may become dirty due to exposure under the hood.

What causes a Chevy Silverado to turn over slowly?

A weak battery will produce a weak spark at the plugs, and will turn the engine over slowly. A worn distributor cap, old or broken plug wires or a worn distributor rotor can result in a weak spark at the sparkplugs, causing the engine to turn over excessively before catching.

Chevy Silverado does not start or crank over. Chevy Silverado does not start or crank over. Welcome to JustAnswer. The pcm actually commands the starter to turn over on this vehicle.

1 Turn OFF the ignition. 2 Disconnect the PCM harness connector. 3 Connect a DMM between the starter enable relay control circuit of the PCM harness and a good ground. 4 Turn the ignition to the START position.

Why does my GM 4.3L engine not start?

No Start Condition Basics There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start, it’s because one of these components is missing from the mix.

Why does my Silverado spit and sputter when I start it?

My 2000 Silverado it spits and sputters when i try to start it then i give it some gas then it fires up runs great after that only spits and sputters on start up. Any advice You either have a very clogged fuel filter, or are in need of a new fuel pump.

My 2000 Silverado it spits and sputters when i try to start it then i give it some gas then it fires up runs great after that only spits and sputters on start up. Any advice You either have a very clogged fuel filter, or are in need of a new fuel pump.

Why is my a / C not working on my Dodge Silverado?

The dual-zone electronic control seems to be working properly. The serpentine belt doesn’t seem loose. The compressor pully is still turning (I had a Dodge that quit and froze up making an awful noise as the belt shreaded).

How can I tell if my Silverado is intermittent?

If you see battery voltage on both terminals, test the starter motor for intermittent operation. If you don’t see battery voltage on the purple wire A terminal on the starter, use a scan tool or DVOM and wiring diagram and check for IGN switch contact closure at the IGN terminal on the BCM.

What was the problem with my Silverado misfire?

Duh ……….. over the years I had forgotten that the remote Voltage Regulators had “points”, and my pickup spent 6-years on the Pacific Coast prior to moving back to an arid climate. The problem was Corrosion in the points contacts from the salt air.

How does the BCM work on a Silverado?

When you turn the key to the START position, the IGN switch contacts close and the BCM seen the 5 volt signal as a START REQUEST. The BCM checks the Immobilizer system to make sure you’re using an authorized key.

Where does battery power go on a Silverado?

Battery power runs from the battery to the B terminal on the starter motor. Battery voltage also runs through the 175 amp fuse to the starter relay terminal #30 in the underhood fuse box. Terminal #30 is the input power to one relay contact.

Why does my Chevy Silverado 1500 not start?

Hi! My question is in reference to my 99 Chevy Silverado 1500. It cranks, but won’t start. I checked the obvious (out of gas, etc.) and changed the fuel pump/filter. It still won’t start. Cranks and will 1/2 catch for a second, but then nothing.

What kind of problem does my Chevy Silverado have?

I have a 92 Silverado 4.3 V6, 5-spd manual trans. Truck will not always start when turning the key, Dash lights and radio fire up but engine does not fire. Most of the time I hear a click and sometimes there is not click at all. If I let the truck sit for 5-15 minutes and try again, it starts right up.

Why is my Silverado Sierra engine popping up?

NO engines popping up. When I got to it I tried to go through the basics of troubleshooting- Turned on key to listen for fuel pump, pump came on. Pulled spark plug to check for spark which it had however plugs were bad and the spark was orange instead of blue.

How to diagnose a Silverado intermittent no crank?

In order to diagnose a Silverdao intermittent no crank condition, you must understand how the starting system works. When you turn the key, the IGN switch acts as a signaling device. It receives a 5-volt reference signal from the body control module (BCM).

In order to diagnose a Silverdao intermittent no crank condition, you must understand how the starting system works. When you turn the key, the IGN switch acts as a signaling device. It receives a 5-volt reference signal from the body control module (BCM).

Although I tried to start it multiple times over a couple weeks I gave it one last try after I called the tow truck. It started right up and engine stayed running like it was supposed to. No more problems for almost a year until about a week ago. I did nothin to fix it a year ago.

How can you tell if your Chevy Silverado fuel pump is going out?

The only way that you are going to know that your Silverado’s fuel pump is going out is that it is no longer providing enough fuel pressure to keep the engine running under a heavy load, or at high-speed. Typically, if you are heading up a hill (or accelerating) the engine may start to feel like it is just running out of steam.

Why does my Silverado have a trouble code P0420?

If you get P0420 or P0430 trouble codes with a scanner, it very well may be the catalytic converter causing these symptoms. One of the best indicators of a clogged fuel pump is going to be that the your Silverado is difficult to start. This because there’s not enough fuel pressure to properly atomize the fuel as it enters the combustion chamber.

What causes a Chevy Silverado engine to misfire?

Keeping in mind that any engine needs air, fuel, and spark for ignition, your Chevy Silverado’s fuel system can often cause the engine to misfire. It can run too lean or rich.

What happens when your Chevy Silverado engine goes bad?

So, when it goes bad, it can knock your Silverado’s air fuel ratio off. This could lead to poor fuel economy, the previously mentioned rough running engine, backfiring, a flashing check engine light, and an engine that has no giddy-up and go. 4.

What causes Silverado to have intermittent no crank?

I’ll be honest with you, finding the cause of a Silverado intermittent no crank condition is no fun. It’s a complicate these that involves multiple switches and three computers. All the signals have to line up before the Electronic Control Module (ECM) will ground the starter relay.

Where is the starter relay on a Silverado?

Battery voltage also runs through the 175 amp fuse to the starter relay terminal #30 in the underhood fuse box. Terminal #30 is the input power to one relay contact. When the ECM wants to initiate Silverado starter crank operation, it supplies power to the starter relay control coil in the underhood fuse box on terminal #86.

I’ll be honest with you, finding the cause of a Silverado intermittent no crank condition is no fun. It’s a complicate these that involves multiple switches and three computers. All the signals have to line up before the Electronic Control Module (ECM) will ground the starter relay.

What should I do if my crank sensor goes bad?

Activate all 8 fuel injectors to start spraying fuel into the cylinders. Maintain the fuel pump activated after its initial start. With fuel and spark now present, the engine now starts. The most important thing to know, is that if the crank sensor goes bad, your 4.8L, 5.3L, 6.0L GM vehicle vehicle will ‘Crank but Not Start’.

What causes a car to not start up?

The cause of this problem is usually one of 3 things – a failed starter motor, a bad connection between the battery and starter motor, or a blown fuse (if present) in line between the starter and the battery.

What should I do if my car wont start?

When the security light goes off, turn the ignition off, wait 20 seconds, and then start the engine. These are the most popular ways to solve the problem of anti theft system car wont start.

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

What to do if your Chevy Malibu won’t start?

Don’t over look the ignition switch.Engine cranks, no spark, no injection pulse, no fuel pressure and no theft light. Intermittent no start how do I check it.How to fix the theft passlock system in 2004 Chevy Malibu / Classic when the car won’t start. Loading…

Why does my car not start when I start it?

There are three very basic components that the engine, in your GM vehicle, needs to start and they are: Air, Fuel and Spark. When your 4.3L, 5.0L or 5.7L GM vehicle cranks but does not start…it’s because one of these components is missing from the mix.

Why is my Chevy Suburban cranking but not starting?

There are a lot of issues that can cause your Suburban to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code.

What to do if your Silverado Sierra wont start?

get a rubber headed hammer and have 1 person crank the motor and another bang on the fuel tank. Most of the time it will work to get it started thats when u know its the fuel pump. It may not work though and it still could be that.

Why does my fuel pump not start when I change it?

You always want to replace the fuel filter when replacing the fuel pump. This could cause the concern you are having. It may seem as you are getting enough fuel from the pressure regulator but if the pressure from the fuel tank is not correct, it will still not start. Another problem you could be having is spark.

What should I do if my Chevy Silverado is not starting?

Fuel pump has been changed, fuel filter, Fuel pump relay, Fuel pump fuse, ignition coil, all have been changed or checked. Any ideas. It is getting power, just seems to not be getting any fuel. The possibilities are endless. Start with basics. Compression. Spark. Fuel. Air in and out. Check the compression with a compression gauge.

Why does my truck not start after a fuel pump replacement?

WELL I COULD HERE IT COME ON BUT NO GAS COMING OUT OF THE FUEL LINE WHERE I DISCONNECTED THE FUEL FILTER LINE TO CHECK IF IT WAS PUMPING GAS TO THE ENGINE AND NO LUCK !!!! SO HERE IS THE DEAL ON THIS PROBLEM WELL TWO OF THE WIRES WERE CROSSED !!!!

What causes air leak in Chevy 8.1L Vortec?

One other potential issue worth point out: sometimes the manifold itself can be the cause of an air leak. The manifold on the 8.1 is made of plastic (as most are) and over time the plastic can warp and crack from the constant heat it’s exposed to.

Are there drawbacks to an 8.1 liter truck?

Can’t endorse the 8.1 liter enough. You’ll be extremely pleased with it’s ability, only drawback is if it’s a daily drive, mpg. Had and 01 8.1liter ZF 6 and that was the most impress stock truck I have ever been in loaded or unloaded.

What kind of truck is GM Sierra 2500HD?

The truck I have been looking the most serious! is an 01 Sierra 2500HD w-8.1 Ally 4×4 SB combo. The truck currently has 79k on the ticker and is in really good shape as far as I can see. The imediate concern is that I’m starting my relationship with this truck with a few more miles than I would like.

What happens if your 8.1 liter engine is a slug?

If your 8.1 is a slug, then it’s busted, or your tires are too big and your running 3.73’s. I live at 7,200ft and my 8.1L does not lay down. Stock truck, no engine mods. Can’t imagine dumping the diesel goodness for a gas BB. Dump the Dodge, not the diesel. My 8.1 ia slug off the line, torque limiting designed into the computer.

What to do if your Chevy Express won’t start?

It sounds like it’s trying to start but won’t. The key only comes out in vans that are equipped with the V.A.S.T system. Weirdly banging on the dash sometimes works too. If it does not try to start for a second and then die, replace the cap and rotor. This video is about an issue involving the disabling of the fuel pump for security. Loading…

What should I do if my car won’t start?

Ask an assistant to turn the ignition key to the On position, but don’t start the engine. As your assistant turns the key, listen closely through the filler neck of the fuel tank. You should hear the whirring sound of the fuel pump motor being energized for two or three seconds.

Why does my car not start when I crank the engine?

If the engine doesn’t crank, or makes an unusual noise when cranking, you may have a starting system problem. The car’s security system may have made an error that disabled the fuel or ignition system, or the chip in the key may have failed.

What kind of truck won’t start after sitting?

Repair manuals and support for cars and trucks manufactured by Chevrolet, a division of General Motors. 2003 S10 V6. If the truck is started everyday it starts right up with no problems. If left sitting for at least 24 hours it is hard to start it.

What kind of engine does a Chevy LS have?

Chevy LS Engines Model Year (s) Engine RPO Avalanche 2002-06 5.3L Vortec LM7 Avalanche Z71 2002-07 5.3L Vortec L59 Avalanche 2007-09 5.3L Vortec LY5 Avalanche 2007-11 5.3L Vortec LC9

How does the PassLock system work on a Chevy Silverado?

With Passlock, your key emits a radio frequency to a receiver inside the vehicle. Only once the Passlock system has confirmed that the key is valid will you be able to start your vehicle. If it detects a problem, your fuel system will shut down and the anti-theft system will require servicing by a trained mechanic.

Why is my Chevy Silverado 1500 not starting?

However, today, when the truck will crank and start, the antitheft icon goes off after a few seconds with the key on and stays off while the truck is running. It never flashed either today or yesterday though. And I don’t know if the antitheft system disables cranking or starting or both.

What makes a Chevy Silverado make a knocking noise?

For the first 30 to 60 seconds after a cold start, the short-skirted pistons rock inside the cylinders and slap against the cylinder walls, sounding rather like a diesel engine. The knocking can be heard around the top of the engine, but is much louder if you listen in the front wheel wells or beneath the truck.

Where does the lifter sound come from on a Chevy Silverado?

You can hear lifter click best around the top of the engine, and isolate the noise with a stethoscope against the valve cover. It will occur at idle and increases as you rev the engine, continuing even when the engine is warm. Valve lifter noise is detrimental and should be addressed quickly.

Is it bad to hear piston slap in Chevy Silverado?

In TSB 01-06-01-022 (Aug 22, 2001) and TSB 01-06-01-028A (Mar 18, 2003) GM has stated that piston slap is not detrimental and will not affect the service life of the engine. Indeed, many owners report reaching 300,000 miles despite hearing piston slap. Valve lifter noise is a light, rapid metallic clicking.

For the first 30 to 60 seconds after a cold start, the short-skirted pistons rock inside the cylinders and slap against the cylinder walls, sounding rather like a diesel engine. The knocking can be heard around the top of the engine, but is much louder if you listen in the front wheel wells or beneath the truck.

You can hear lifter click best around the top of the engine, and isolate the noise with a stethoscope against the valve cover. It will occur at idle and increases as you rev the engine, continuing even when the engine is warm. Valve lifter noise is detrimental and should be addressed quickly.

Is the GMC Sierra Z71 ext.in good condition?

Recently picked up an ’01 GMC Sierra SLE Z71 ext. cab with 130k on her. It’s in really good condition, no rust, very clean, the previous owner took good care of it. I am however having an issue when starting it.

What’s the knocking noise coming from MY Suburban?

I recently ran into this same knocking/ ticking issue coming from my 2005 Suburban, 5.3 Vortec. After countless hours of research, multiple engine flushes, oil change, air filter, valve adjustment…etc etc etc…my solution and problem were relatively simple.

If your Silverado won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue. Here are the most common cause of acceleration with the RPM’s going up: 1. Transmission Fluid Low

What causes a Chevy Silverado to not start?

There are really two main ways that a vehicle will not start. The first and most common is when it won’t turn over. This just means that the engine doesn’t move when you turn the key. The second way that your Silverado won’t start is when the engine turns when you engage the starter, but it won’t fire and run on its own.

Why does my Honda Accord turn over but not start?

Occasionally, when I turn it off, come back a few minutes later, it turns over but won’t start. Leave it 15 mins and it starts. Recently wouldn’t start at all, dealership put in fuel filter and fuel pump. Problem persists. Good fuel pressure (55psi). A second dealership has no idea of the cause; cjecked relay and its good.

Can a truck start but won’t go into gear?

Truck starts but you put it in gear and it won’t move! Won’t go into gear. No I haven’t where is the brake switch put it in neutral and reverse. It was in the way so I used another truck to push it out of the way. The back wheel drug like something was holding it … read more I have a 2008 Chevy Silverado 1500. The issue is the truck

Why does my car not shift into first gear?

The signs that the car will show at this time are: The transmission won’t shift and the car makes a grinding sound when the engine is running. Besides, pulling out of first gear will feel harder than normal. The transmission will shift in and out of gear without any issue when the car is not running.

Why is my transmission not allowing the starter to start?

If the PNP switch does not provide the proper voltage signal to the module indicating the transmission is in either Park or Neutral, the module will not allow the starter operation.

Truck starts but you put it in gear and it won’t move! Won’t go into gear. No I haven’t where is the brake switch put it in neutral and reverse. It was in the way so I used another truck to push it out of the way. The back wheel drug like something was holding it … read more I have a 2008 Chevy Silverado 1500. The issue is the truck

Why does my car not shift out of first gear?

This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car’s computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear.

What to do if your Dodge truck doesn’t shift gears?

Pull the shifter down to man 1st gear & proceed to accelerate to aprox 15mph. Move the shifter to Man 2nd. Do you feel the transmission shift gears? If you are in doubt if it shifted or not, pull the shifter back down to Low.

Why does my Silverado 1500 not go into gear?

Won’t go into gear. No I haven’t where is the brake switch put it in neutral and reverse. It was in the way so I used another truck to push it out of the way. The back wheel drug like something was holding it … read more I have a 2008 Chevy Silverado 1500. The issue is the truck I have a 2008 Chevy Silverado 1500.

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Ruth Doyle