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 is my Duramax diesel engine not working?

The trucks computer keeps track of how much fuel needs to be added or subtracted from each individual cylinder to make the engine run smoothly, and this value is called the balance rate. If one cylinder is contributing too much or not as much as the rest, the cause is usually a bad injector and the cure is a replacement.

What makes a Duramax LB7 diesel so special?

The introduction of common rail injection powered by the Bosch CP3 injection pump made the LB7 Duramax stand apart from other diesels of the day with excellent power and efficiency.

Can a 6.6 liter diesel engine start in cold weather?

At 6.6 liters, these engines (and all other diesels) are big hunks of metal. Because metal absorbs heat, and there is so much of it, starting a diesel engine in cold weather can be a challenge. The internal combustion temps have difficulty getting hot enough to ignite fuel and start the engine.

Where to come when your 6.5L diesel will not start?

Where to come when your 6.5L Diesel will not start! “The PMD / FSD (Pump mounted driver) is by far the #1 cause of 6.5L no-starts (at least 90%). If your truck experienced random stalling like someone shut the key off before ultimately refusing to start again, the PMD is very likely the issue.

How many volts does a Chevy truck have?

By chatting and providing personal info, you understand and agree to our Terms of Service and Privacy Policy. shows 12.18 volts turn the… Submitted: 5 years ago. Category: Chevy are you 100 % sure both battery cables are clean and tight at the battery ?

What causes fuel starvation in a Duramax Diesel?

Fuel Starvation and/or Air in the Fuel Lines. The Duramax diesel is susceptible to fuel starvation and getting air in the fuel lines. This can be contributed to the fuel filter housing design and the fact that the Duramax does not use a lift pump. Rather, the high pressure fuel pump (injection pump) is responsible for vacuuming fuel from the tank.

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

Simple fix by checking the ground in the harness right behind the passenger side cylinder head. Trace the break and wire it to a new location for a ground such as the front of the cylinder head as I did. Loading…

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.

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.

Why does my Silverado 2500HD not start up?

No power to the pump. No click of the starter, absolutely no sound of anything starting up at all. Delay has replaced the fuel pump relays, works for a day or two, then go to start it, nothing again. No crank from the starter, no sound of the fuel pump, but power to the dash lights.

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 does my Chevy Silverado make a noise when I stop?

A steady whine from the front that is best heard while stopped or during low speed turns. With the steering wheel straight, the whine may be null or low, but the noise increases noticeably when the steering wheel is turned. This is often caused by low power steering fluid, which indicates a leak that must be corrected.

What does no start no crank no click mean?

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. In the old days, power flowed through the ignition switch and down to the starter solenoid. Not anymore.

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….

What kind of engine does a 2003 Silverado have?

Here’s the kicker…..I put the new one in and the truck started right up and we thought it was fixed, my son drove the truck and it ran fine, but when he returned home, it wouldn’t keep running after he would try to start it again, no matter how many times we tried.

Why did my Silverado engine die after 9 months?

Turns out that the wiring harness to the ECM had fallen down onto the motor, melted the loom, and shorted the ECM out occassionally. It only took 9 months to figure this out, but it did the trick. It was extremely frustrating as it would run like a champ one day, and die the next.

What should I do if my long crank wont start?

Just a recap of what you should do first to determine if your long crank before starting is fuel related or not. First, before you try cranking the engine over, turn the ignition key to the run position then back off without cranking the starter.

What is the code for Crank no start?

Come along with Eric O. at the SMA shop as he has a look at this 2009 Chevrolet 1500 5.3 that was towed in as a crank no start. It has a code stored in it U0109 for “loss of communication with fuel pump control module.” You can follow along with Eric O. as he brings you along and diagnosis the FPCM.

What are the problems with a GM Truck wiring system?

Some wiring system issues are more complex, however: open circuits, short circuits, erosion, repeated blowing fuses, or hot smells from wires or melting plastic. These are obviously serious and can put your truck out of commission, possibly for good.

What is a typical GM starting system wiring diagram?

Click on the image here to pull up a PDF of a typical GM starting system wiring diagram. Depending on the year, model and engine of your GM vehicle, your starting system may be less complicated or use only some of the components shown here. For example, earlier anti-theft systems didn’t communicate the same way with the PCM.

What to do if your crankshaft sensor is not working?

Issues with the crankshaft sensor can quickly lead to problems that affect the drivability of the vehicle. For this reason, if you suspect your crankshaft position sensor has an issue, have the vehicle inspected by a professional technician right away. They will be able to diagnose your car and replace your crankshaft position sensor if necessary.

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.

How does the ignition switch work on a GM car?

The ignition switch now talks to the body control module (BCM) and it’s the BCM that initiates one of two relays. The second relay, the more important of the two, is controlled by the powertrain control module (PCM). And it only operates the starter relay after it’s satisfied that the correct key is in the ignition.

What should the voltage drop be on a GMC Truck?

The voltage drop should be performed with the fuel injectors disabled and while cranking the engine. The voltage drop should not exceed 200 mV. If the voltage drop is above 200 mV, replaced the effected cable. Please follow this diagnostic or repair process thoroughly and complete each step.

Why are the parking lights on on my Chevy Silverado?

I have the same problem with my 2010 Chevy Silverado. I took the PRK Lamp relay fuse out but the front and rear parking lights stayed on. I also disconnected the trailer light harness per the advise of a Chevy forum where another Silverado’s tail lights would not shut off.

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 should I do if my Chevy Silverado wont start?

Connect a 30-amp fused jumper between the battery positive voltage circuit of the starter relay switch circuit and the supply voltage circuit of the starter solenoid. Does the engine crank?

Why is my Chevy Silverado not cranking over?

Since you have voltage on the crank fuse while in crank position, we know the ignition switch is good. The pcm supplies the ground to the starter relay to turn on the starter. It is possible if the wiring is good, there is a problem with the pcm.

How does a test light work on a Chevy Silverado?

Connect a test light from the supply voltage circuit of the starter motor relay coil circuit to the control circuit of the starter motor relay coil circuit. With the transmission in park, or clutch pedal pressed, turn the ignition switch to the START position. Does the test light illuminate? Turn OFF the ignition.

Why do my park lights stay on after I Turn Off the motor?

My park lights stay on after I shut off motor and park. It drained my battery and while recharging I heard a noise in the under hood fuse panel. I pulled out the fuse that was vibrating and the light went out but after placing the fuse back in the park lights refused to go out. So now I can not park the truck without pulling the fuse.

Why did my Chevy Silverado 1500 go off while driving?

I drove it for about 15 minutes. The battery gauge showed 14 volts while driving, so the alternator was good. The headlights went off when I turned the key to the on position with the truck in park. Yesterday they had stayed on.

What kind of car has no crank no start?

Hi folks, great forum! I have a 2004 Chevy Silverado 1500 Z71 with 180,000 miles. It has a no crank, no start condition. I have replaced the ignition switch thinking that was the issue, but it still has the same problem.

What kind of car is Silverado no crank no start?

Mine is a 5.3V8 2006 and I used the truck without issue just yesterday. Many starts as I moved firewood into the house from the store. Later ran out to the neighbour’s place and finally parked it, leaving the battery on charge. Daytime high was around -14C This morning the battery is fully charged but my attempt to start was defeated.

How can I tell if my Chevy Silverado is a PCM?

Without a GM tech two scan tool, there is no way to verify it is sending out a crank signal. However, if you verify all wiring is good and there are no open circuits, then we will know it is the pcm. You can check to see if the yellow/black wire is grounded at the starter relay.

What should I do if my Chevy Suburban wont start?

Chevrolet Suburban Questions – 2004 suburban 5.3 cranks but wont start no spark changed crank sensor – CarGurus 6 people found this helpful. Just replaced cam sensor still no spark 2 people found this helpful. did you check codes and fuel pressure. 1 people found this helpful. Have good fuel pres.

How to test no spark no start test?

No spark from all of the Coil-On-Plug Ignition Coils. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light. P0335: No Crank Sensor Signal Detected. P0336: Inconsistent Crank Sensor Signal Detected.

How to start a car with no spark?

Activate the 8 COP coils to spark. 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.

Why does my Silverado 4.3 won’t start?

2005 4.3 150,000 miles won’t start. Timing is ok,fuel pressure well above 50 lbs, getting fire, I can smell gas from throttle body and also from the exhaust (after cranking a few minutes).

Is the Chevy 5.3 liter engine without problems?

In fact, it is not a rare occurrence for a 5.3 Chevy to go above and beyond 200,000 miles. However, no engine or car is entirely without flaws. If you are in the market for a Chevy 5.3 vehicle, there are some things to look out for.

What causes a GM pick up to not start?

The one symptom that’s gonna’ be staring you right in the face is your GM pick up or van or SUV cranking but not starting. More specifically, you’ll see one or all of the following symptoms when the crank sensor fails: No spark from all of the Coil-On-Plug Ignition Coils.

Why does my Chevy Silverado truck not start?

Would start after cranking for a few minutes for a month. Now it will not start for anything. Wasn’t getting spark when inchecked. Replaced ignition coil, nothing, replaced cap and rotor, nothing, replaced crank positions sensor, nothing, replaced ICM, finally have spark. Still, will crank, won’t start.

What kind of spark does a Chevy Silverado have?

Yea it’s got good spark, checked all wires. New plugs and wires. Pressure tested cylinders, all 150+/- getting gas. Timing check against top dead center piston 1, cap pointing at piston 1 and wheel lined up with motor’s markings.

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).

Why does my GMC C5500 not crank or shift?

Customer may comment that the vehicle will not crank or start/will not shift after vehicle has been jump started due to battery run down or after installation of after market equipment.Technicians may find no communication with the TCM and or DTC U101 [my PPE had only a C101,which I know isn’t the actual DTC]stored in other modules.

Can a 2006 Chevy C5500 start without a key?

I have a 2006 Chevy C5500 with the duramax. Its a bus and I am going to turn it into a dump truck….hopefully. My issue as i said is no crank no start from the key. I was able to get it started by turning the key on and crossing a screwdriver over the terminals on the starter but I am not able to start it with the key.

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 when your GMC Sierra won’t crank?

When starter won’t crank, pull the starter relay in underhood fuse block. Terminal 30 is hot all the time. Use proper jumper wire between terminal 30 and terminal 87, the starter motor should crank the engine. Again, make sure tranny is out of gear and parking brake is set.

Why does my truck have no power at all?

When I try to start my truck I have no power at all, no lights or anything. The fog lights will come on because they are hooked directly to the battery. Any ideas on where to start looking?

What to do if your GMC Envoy has electrical problems?

If you have a dealer or after market security system or other device disconnect it and drive the car for a while or not and see if the problem goes away. One way is to pull the main CB for the system Most have one in line soemwher . If not find where it is powered and pull the connection or whatever it is and see what happens over a week!

Is the GMC Envoy rear lift door working?

It has less than 30,000 miles on it, so maybe I have a while for anything major to happen. 2006 Envoy the light rear lift door works fine. But the two side light do not come on as light or as stop light. Even the tow light connection work ok. How do I go about checking the fuse or relay?

Why is the battery draining on my Mercedes medic?

If the car is left parked in high pedestrian traffic areas this could be a problem. It may cause the battery to drain within a couple of days in some models. Try to turn off the proximity key function in your car by looking up the instructions on the owner’s manual.

Why does my Chevy Silverado battery keep draining?

My 2007 Chevy silverado battery keeps draining. I thought it was from the radio not shutting off when I open the door but I shut the radio off and the battery still drains. What can be draining it? Clicking this will make more experts see the question and we will remind you when it gets answered.

Why does my GMC Silverado have no crank?