When does the Check Engine light come on on a trailblazer?

The engine or check engine light will illuminate on the control panel of your TrailBlazer when the vehicle needs routine maintenance, if there is a problem with its emissions control system or if the computer detects a change in engine performance.

How do you reset the fault code on a trailblazer?

Because fault codes are generated and stored on the Trailblazer’s electronic control unit, you’ll need to reset the system; otherwise, the light will stay on. Turn the ignition key to the “II” position. Open the hood of the car, then open the fuse panel cover located in the engine bay.

Where are the IGN fuses on a trailblazer?

Then, pull the PCM BAT and PCM IGN fuses from the fuse panel. Use the fuse diagram on the underside of the cover to locate these fuses. Wait five minutes and then turn the ignition key to the “off” position. Place the fuses back into the fuse panel, in their proper location. Start your Trailblazer to verify that the check engine light went off.

What to do when your check engine light goes off?

Wait five minutes and then turn the ignition key to the “off” position. Place the fuses back into the fuse panel, in their proper location. Start your Trailblazer to verify that the check engine light went off. “Chevrolet TrailBlazer, GMC Envoy Repair Manual 2WD & 4WD 2002-2009”; Alan Ahlstrand, Ralph Rendina, John H. Haynes; 2009

Why does my check engine light not light up?

If your Check engine light is ON, the easiest way to diagnose this problem is to always check your trouble code memory with an OBD2 scanner. The check engine light will not light up if there is a scheduled service as the service engine soon light.

What to do when service engine soon light comes on?

In most cases, you have to repair the problem that caused the service engine light, and it will disappear by itself. If the light shows up because of scheduled service, you need to reset it with a diagnostic scanner or a particular combination for your car model. Can low oil cause service engine soon light?

How to clear service engine soon light 1990 to 2002 Chevy?

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What to do when your check engine light is flashing?

On pre-1996 vehicles, you’ll find different procedures to retrieve the codes. With some models, for example, you can use a code reader—available at most auto parts stores—or an analog voltmeter. Other models use the ignition key to cycle between the on and off positions a number of times to read the code blinking light on your dashboard.

What does a 02 mean on a check engine light?

For example, a “02” means the computer detected low input in the mass air flow sensor circuit. Once you see the check engine light illuminate on your dash panel, you can retrieve the trouble codes. On pre-1996 vehicles, you’ll find different procedures to retrieve the codes.

What does a check engine light on an OBD mean?

When the computer can’t correct the problem, and it doesn’t correct itself, the OBD system will store a diagnostic trouble code (DTC) in memory. This triggers the check engine light.

Why does my Chevy Trailblazer have a flashing check engine light?

A flashing check engine light is your Chevy Trailblazer’s way of saying “I have a serious problem, don’t ignore me”. Most of the time, that serious problem is a misfire. This flashing light should not be ignored. When your engine is misfiring, it is dumping raw fuel into the exhaust.

Where to find OBD-II check engine light trouble codes?

Choose the section of codes based on the first three characters of the code (e.g. P0171 is on the P01xx or P0100 through P0199 page): If you’re unsure where to find code information, we highly recommend you just use the search feature instead to get help!

What should I do if my check engine light is not on?

Most vehicle manufactures also have their OEM codes that some Readers and Scanners can’t seem to read for lack of conversion ability. Check the make and model of your reader to see what it is built for and if all else fails, head into a parts store and they should be able to read the issue at no cost to you.

Where do I find the trouble code on my Chevy?

These are listed in numerical order for easy searching. When retrieving Chevy trouble codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on. 3.

What causes a Chevy Trailblazer engine to misfire?

Keeping in mind that any engine needs air, fuel, and spark for ignition, your Chevy Trailblazer’s fuel system can often cause the engine to misfire. It can run too lean or rich. Alternatively, there may not be enough fuel for proper combustion, or the fuel isn’t atomizing properly.

What is the diagnostic code for a Chevy check engine light?

Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Chevy diagnostic trouble codes. Manufacturer Specific Codes P0342Camshaft Position Sensor A Bank 1 Low Input – Related Information P1031HO2S Heater Current Monitor Control Circuit Sensors 1

What causes the Check Engine light to flash?

There will always be trouble codes associated with the check engine light blinking. These trouble codes will be able to tell you where to start hunting down the problem. Here are the most common issues that end up causing the check engine light to flash. But, follow the OBDII codes. A code scanner is cheap .

How do you reset the engine light on a trailblazer?

Take the vehicle to a mechanic or perform the necessary repairs yourself before resetting the engine light. The light must be reset manually. Pop the hood open and locate the fuse panel cover in the engine bay.

What to do if your check engine light goes off?

Look at the diagram on the fuse panel cover to locate the correct fuses. Wait at least 5 minutes. Turn the ignition off. Replace the two fuses and reinsert the fuse panel cover. Lower the hood. Start the vehicle to verify that the check engine light went off. Katie B. Marsh is a self-published author, article writer, screenwriter, and inventor.

When does the Check Engine light come on?

The check engine light on your 2003 Trailblazer comes on when regular maintenance is required, or when there is a problem related to the vehicle’s emissions control system. The check engine light can also, in rare instances, refer to various sensors related to engine performance.

What are the warning lights on a Chevrolet?

The following are warning lights and indicators found in vehicles built by Chevrolet. Click a link to learn more about each one. They are roughly ordered by importance, which tends to be by color (red, amber, yellow, orange, green, blue, gray). There are nearly 50 of them so search carefully!

What are the warning lights on my dashboard?

So, what is that light on your dashboard? What follows is easily the most complete list available of symbols and warnings that may appear in and on your car’s dashboard or instrument cluster. The following are warning lights and indicators found in vehicles built by Chevrolet. Click a link to learn more about each one.

Why does my Chevy Trailblazer have reduced engine power?

Most of the time, reduced engine power doesn’t make commuting home possible since the max speed your Chevy Trailblazer will reach is not going to be enough to keep you safe on the highway. If your Trailblazer has gotten this reduced engine power warning, it means that one of its engine management sensors or the ECU have gone bad.

What is the throttle position sensor on a trailblazer?

The throttle position sensor is one of the most vital sensors in your Trailblazer. If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. The TPS data also helps determine when the transmission will shift.

What kind of vehicle has a check engine light?

This page will list all the Check Engine Light questions and answers asked of us pertaining to Chevy vehicles. Some Chevy vehicles include Silverado, Suburban, Cavalier, Trailblazer, Tracker, Tahoe, Cobalt, and more. 2003 Chevy Silverado 1500 P0327 – I accidentally sank the truck in a creek and now I have a P0327 code, what is the problem?

What is the Check Engine Light code for a Chevy Tahoe?

2003 Chevy Tahoe 5.3L P0135 Engine Light Code – I have a 03 Tahoe with a P0135 code that won’t go away. Help! Question: I ran out of gas in my 1999 Silverado.

Why does my Chevy Trailblazer not run properly?

Your Trailblazer’s engine creates a vacuum as it runs. The amount that is created is carefully thought out during the engine design process. When there is too much vacuum, it creates a situation where air is not coming in and being read by the MAF sensor, which causes the vehicle to run wrong and not accelerate.

Why is the spark chain on my trailblazer not working?

The timing chain (or belt) is responsible for keeping the upper valve train synced with the crankshaft. This is vital for spark timing. If the timing is off a little and the engine still runs, the timing belt may have skipped. If it has jumped too much the Trailblazer may not even fire.

Why does my Chevy Trailblazer not start at all?

Crank/Cam Sensor- When the cam or crank sensors are not being read by the ECM/PCM, it’s impossible to get the ignition timing right. If you Trailblazer does start at all, it’ll run rough. It could be a more serious mechanical issue, such as as bent valve, bad lifter, etc….

Why does my check engine light keep flashing?

Most of the time, that serious problem is a misfire. This flashing light should not be ignored. When your engine is misfiring, it is dumping raw fuel into the exhaust. This raw fuel can detonate, which causes damage to the catalytic converter and the exhaust system itself.

What causes a bad O2 sensor on a Chevy Trailblazer?

While a rough running engine can be a sign of a bad oxygen sensor, it is often a sign of a misfire as well. Often enough, there won’t be any noticeable signs of a bad oxygen sensor. You’ll go to get an emissions check done, and your Trailblazer fails the test.

What is the oxygen sensor code for a Chevy?

P1137HO2S Bank 1 Sensor 2 Lean Or Low Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Trouble Code P1138HO2S Bank 1 Sensor 2 Rich Or High Voltage – Read Our Article On Oxygen Sensor CodesFor Help With This Chevy Check Engine Light Code

What kind of engine does a Chevrolet TrailBlazer have?

Vortec is Chevrolet’s version of variable-valve timing. When the TrailBlazer was eliminated from Chevrolet’s lineup in 2010, the 4.2-liter was eliminated with it. The 4.2-liter engine is an inline six-cylinder (I-6) and is powered by regular gasoline.

What kind of engine does a Chevrolet 4.2 liter have?

The 4.2-liter–like the 4.3-liter before it–is a member of the Vortec family of engines. Vortec is Chevrolet’s version of variable-valve timing. When the TrailBlazer was eliminated from Chevrolet’s lineup in 2010, the 4.2-liter was eliminated with it.

How do you turn off the Trailblazer engine light?

Pop the hood open and locate the fuse panel cover in the engine bay. Release the cover from its retaining clips by pulling it up. Locate and remove the “PCM IGN” and “PCM BAT” fuses. Look at the diagram on the fuse panel cover to locate the correct fuses. Wait at least 5 minutes. Turn the ignition off.

What to do if your check engine light is not working?

Start by inspecting the wiring and connectors, repair as required. If everything is fine, check the sensor using a DVOM (digital volt ohm meter). Replace if necessary. You can find the proper resistance values using a repair manual or comparing the sensor reading on bank 2 to that of bank 1. Good luck with your knock sensor issue!

Why does my Trailblazer have a reduced power light?

When the engine power has been reduced, the engine and transmission can operate in totally different ways. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. Good luck diagnosing your Trailblazer’s reduced engine power light. If there is anything that you would like to add, please feel free to leave a comment below.

Why does my check engine light keep blinking?

When your engine is misfiring, it is dumping raw fuel into the exhaust. This raw fuel can detonate, which causes damage to the catalytic converter and the exhaust system itself. There can be other situations that can cause the check engine light to blink as well.

How to reset the oil change light in my 2006 Chevrolet TrailBlazer?

Rotate the key back to the “Lock” position, and remove it. Wait a few moments, and then start the Trailblazer normally. The engine oil light on the dash should no longer be illuminated. The light will stay off until it is time to change the oil again.

When did the Trailblazer Chevy truck come out?

Chevrolet introduced the Trailblazer brand of sport utility vehicle in 2002, as a follow-up to the historically popular Blazer line of trucks. The Trailblazer was produced until the 2009 model year, and includes features such as four-wheel drive and traction control.

When to use service engine soon instead of check engine light?

Some manufacturers use the service engine soon light instead of the check engine light when there is just a minor problem with your car and not a severe problem. It could also mean that it is time for a scheduled service, such as oil or spark plug replacement.

Are there any problems with the 2004 Chevrolet TrailBlazer?

CarComplaints.com Notes: It would be ill-advised to blaze any trails with the 2004 Trailblazer. Its faulty fuel gauge could leave you stranded. This data is from the NHTSA — the US gov’t agency tasked with vehicle safety.

Why does my Chevy Trailblazer make a knocking noise?

The vehicle was taken to the dealer for diagnostics. The technician advised that the knocking noise was normal for the type of engine in the vehicle. The vehicle was then taken to an independent mechanic who advised the contact that the pistons in the engine were down sized, causing the noise. The vehicle was not repaired.

When does the service engine soon light come on?

What does service engine light mean on 2006 Chevy?

The service engine light illuminates on your 2006 Chevrolet when it is time to have a regularly scheduled oil change or tune up. The OBD, or On-Board Diagnostics computer, stores the codes from the vehicle’s sensors. An OBD scanner tool can be used to read the codes and tell you exactly what is wrong with the vehicle.

What’s the best way to reset a check engine light?

In such a case, it is highly recommended to check the codes with a scanner instead. Switching the ignition on and off is also one method of hard reset without disconnecting batteries. Put the keys in your ignition and turn your ignition on and off consecutively after a second in each step.

Why does the Check Engine light keep blinking?

When the ECU ( engine control unit) detects a problem that it is unable to regulate, it then turns on the check engine light on your dashboard. This check light will either keep on glowing or will blink, depending on the nature of the fault. If the engine check is on regularly then it means that there is a problem but not an emergency.

What does the Check Engine light on a 2006 Chevy Trailblazer mean?

Your 2006 Chevy Trailblazer’s “check engine” light comes on when there is a problem with the sensors on the vehicle. The engine codes can be read with an onboard diagnostic scan tool. This scan tool connects to the electronic control unit and retrieves the codes so that you can repair your Trailblazer.

How can I read the engine code on my Trailblazer?

The engine codes can be read with an onboard diagnostic scan tool. This scan tool connects to the electronic control unit and retrieves the codes so that you can repair your Trailblazer. When you’ve fixed the vehicle, you’ll need to reset the “check engine” light.

How does the scan tool work on a trailblazer?

This scan tool connects to the electronic control unit and retrieves the codes so that you can repair your Trailblazer. When you’ve fixed the vehicle, you’ll need to reset the “check engine” light.

Where can I find the owner’s manual for the Chevrolet TrailBlazer?

2021 chevrolet.com (U.S.) chevrolet.ca (Canada) Trailblazer Owner’s Manual 2021 Trailblazer Canada My Chevrolet App Download the my.Chevrolet App for full manuals and “how to” videos. The full owner’s manual is located with your vehicle infotainment system, if equipped.

What should I know about driving a trailblazer?

About Driving the Vehicle As with other vehicles of this type, failure to operate this vehicle correctly may result in loss of control or a crash. Be sure to read the driving guidelines in this manual in the section called “Driving and Operating” and specificallyDriver Behavior0181,Driving Environment0181, andVehicle Design0181.

What does a flashing check engine light mean?

They are not in the car repair diagnostics business, so they have no leverage to do anything other than provide you with the codes and hope that that service may translate into some additional business form them. A flashing check-engine light means damage is being done. It’s a bad idea to drive it when the light is flashing.

Why did my service engine light come back on?

Since he used to be a mechanic he thought it could be an O2 censor; so he took it in to the Midas in our town and they also believed it was the O2 sensors and they both were replaced. The next day lo-and-behold the service engine soon light comes back on.

What to do if you see a warning light at AutoZone?

If you see a warning light, come to AutoZone Fix Finder reads information from the Check Engine, ABS, and maintenance lights. The test often takes less than a minute once the reader is plugged in. Find the closest store to you.

How To Reset Check Engine Light: Follow These 4 Easy Ways! The check engine light comes on when your car’s computer detects an issue within the powertrain. It can indicate a major or minor complication, but ignoring it definitely makes the problem worse, leading to costly damage and repair.

How does the fix finder work at AutoZone?

Fix Finder reads information from the Check Engine, ABS, and maintenance lights. The test often takes less than a minute once the reader is plugged in. Find the closest store to you. The report details recommended solutions and suggests parts for a repair.

What should I do if my check engine light comes on?

While yes, both yourself and AutoZone can read the engine computer’s stored codes, and through Fix Finder, determine likely causes based on thousands of mechanics intel, none of these can pinpoint with 100% accuracy exactly why the CEL came on.

What causes a misfire on a check engine light?

If you have a #2 misfire and move the #2 coil to #4, for example, then the misfire moves to #4, you know the coil is suspect. Defective fuel injector: If a fuel injector fails to deliver the proper amount of fuel to a cylinder, you will have a misfire.

Why does my check engine light come on when I leave my cap off?

If you leave your gas cap off accidentally, you’ll notice this light rather quickly. These leaks in the gas tank recirculation (also known as EVAP emission control) system are often grouped as “small” or “large” leaks.

What to do if your engine maintenance light goes out?

Check your engine control unit for any stored trouble codes. If you receive any codes, save them and try to get information about what they mean. If there are codes for emission problems that are not dangerous for your engine, you can try deleting the code to see if the engine maintenance light goes out.

What are the dimensions of a Chevy 4.2 liter inline 6?

Throughout its production life, it had a bore (cylinder width) of 3.66 inches and a stroke (distance the piston travels inside the cylinder) of 4.01 inches, except in 2003, when it was 4.02 inches. The overall displacement was 4,195 cubic centimeters in 2002 and 2003; the displacement shrank to 4,161 cubic centimeters from 2004 through 2009.

What was the owner’s manual for the 2002 Chevrolet TrailBlazer?

Are there any problems with the Chevy Trailblazers?

Many drivers have experienced problems with the dashboard gauges, including the fuel gauge, speedometer and “check engine” warning light. Additional electrical problems include power automatic door locks and windows that fail to work or operate intermittently.

Where are the power seat controls on a Chevrolet TrailBlazer?

If you have this feature, the power seat controls are located on the outboard side of the front seat cushions. Move the front of the seat control up or down to adjust the front portion of the cushion. Move the rear of the seat control up or down to adjust the rear portion of the cushion.

How do you change the fuel filter on a Chevy Trailblazer?

Use a screwdriver to loosen the clamp that holds the fuel filter attached to the vehicle’s body. Take out the old fuel filter and insert the new one. Tighten up the clamp. Remove the caps on the fuel filter and insert the hoses back on the fuel filter.

What is the code for the Check Engine light?

P1245Intake Plenum Switchover Valve P1250Early Fuel Evaporation Heater Circuit P1257Supercharger System Overboost P1258Engine Coolant Overtemperature – Protection Mode Active P1260Last Test Failed SCC Or Theft Detected, Vehicle Immobilized P1270Accelerator Pedal Position Sensor A/D Converter Error

What does the code p1345 mean on a Chevy?

P1345 CHEVROLET Meaning The Crankshaft Position (CKP) sensor is a permanent magnet generator, known as a variable reluctance sensor. The magnetic field of the sensor is altered by a crankshaft mounted reluctor wheel that has seven machined slots, 6 of which are equally spaced 60 degrees apart.

How can I get my Check Engine light back on?

Check your repair manual to find the fuse to the engine control unit. Once you have your check light disappear, using any of the five above-mentioned methods, then you are ready to go.

What was the service 4WD light on my 1997 Blazer?

Not fully engaged the system wore a lot of the front wheel drive parts down and needed to be R&Red.Not cheap. But this was on an 1997 Blazer with Electronic control 4wd, so lets hope they improved the system since then.

When did Chevy Blazer get electronic control 4WD?

But this was on an 1997 Blazer with Electronic control 4wd, so lets hope they improved the system since then. As was stated earlier in the thread, I don’t think it’s parts, I think it’s the switch tnpartsguy spoke of, since the light on the switch was off when the notice light was on, and vice versa.

Why is the notice light on on my 4WD switch?

When the notice light was on, the lights on the 4WD switch were not working and it would not go into any other mode besides 2WD. Now, the notice light is off and the lights on the switch are working, and it will go into anything except 4WD Low.

How can I get my Check Engine light to go off?

One of the possible ways of getting your check engine light to go off is pulling off the engine control unit’s fuse and then putting it back again. Although this won’t solve the problem in newer cars, it may solve the problem in a little bit older cars, and it is easy to try. Check your repair manual to find the fuse to the engine control unit.

Is there a way to turn off the Check Engine light?

Do I need a special tool to turn off my check engine light? Yes. If you want to turn off your check engine light yourself, then you will need an OBD code reader. It plugs into the diagnostic port commonly located under the dashboard in cars made in 1996 or after.

How to get rid of the ” Check Engine ” light axleaddict?

If it does not go off, then your engine has a problem. 1. Drive car and let light go off by itself. 2. Turn engine on and off three times in a row. 3. Disconnect and reconnet the battery. 4. Use an OBD code reader. 1. Drive Your Car and Let the Light Go off by Itself

What should I do if my Chevy Trailblazer goes off?

To me, this worked very well! I have a 2008 Trailblazer LT , and recently after I start the vehicle, the heater,dashboard lights,alternator go off , the battery light comes on. After 2 to3 minutes everything come back to normal any ideas?

Is the instrument cluster on the Chevrolet TrailBlazer out?

I also need to vent about my personal feelings, regarding the absolutely pitiful lack of customer service concerning this issue, so please bear with me.

What makes a Chevy Trailblazer run too rough?

If an oxygen sensor goes bad, it can make your Trailblazer run too lean (or rich). A super lean running engine will often idle rough. The fuel injection systems job is to atomize the fuel into fine mist.

What are the sensors on a Chevy Trailblazer?

The oxygen sensors that are equipped in your Chevy Trailblazer are responsible for monitoring the exhaust to help the ECU determine the correct air/fuel mixture. Of all the sensors equipped in your vehicle, the O2 sensors may have it the hardest.

When does the Check Engine light come on on a trailblazer?

When does the Check Engine light come on on a trailblazer?

How do you reset the fault code on a trailblazer?

What to do when your check engine light goes off?

Why does my check engine light not light up?

How to clear service engine soon light 1990 to 2002 Chevy?

What to do when your check engine light is flashing?

What does a check engine light on an OBD mean?

Why does my Chevy Trailblazer have a flashing check engine light?

What should I do if my check engine light is not on?

Where do I find the trouble code on my Chevy?

What is the diagnostic code for a Chevy check engine light?

What causes the Check Engine light to flash?

What to do if your check engine light goes off?

When does the Check Engine light come on?

What are the warning lights on my dashboard?

Why does my Chevy Trailblazer have reduced engine power?

What kind of vehicle has a check engine light?

What is the Check Engine Light code for a Chevy Tahoe?

Why is the spark chain on my trailblazer not working?

Why does my Chevy Trailblazer not start at all?

What causes a bad O2 sensor on a Chevy Trailblazer?

What is the oxygen sensor code for a Chevy?

What kind of engine does a Chevrolet 4.2 liter have?

How do you turn off the Trailblazer engine light?

Why does my Trailblazer have a reduced power light?

Why does my check engine light keep blinking?

When did the Trailblazer Chevy truck come out?

When to use service engine soon instead of check engine light?

Why does my Chevy Trailblazer make a knocking noise?

When does the service engine soon light come on?

What’s the best way to reset a check engine light?

Why does the Check Engine light keep blinking?

How can I read the engine code on my Trailblazer?

How does the scan tool work on a trailblazer?

What should I know about driving a trailblazer?

What does a flashing check engine light mean?

What to do if you see a warning light at AutoZone?

How does the fix finder work at AutoZone?

What causes a misfire on a check engine light?

Why does my check engine light come on when I leave my cap off?

What are the dimensions of a Chevy 4.2 liter inline 6?

What was the owner’s manual for the 2002 Chevrolet TrailBlazer?

Where are the power seat controls on a Chevrolet TrailBlazer?

How do you change the fuel filter on a Chevy Trailblazer?

What does the code p1345 mean on a Chevy?

How can I get my Check Engine light back on?

When did Chevy Blazer get electronic control 4WD?

Why is the notice light on on my 4WD switch?

Is there a way to turn off the Check Engine light?

How to get rid of the ” Check Engine ” light axleaddict?

Is the instrument cluster on the Chevrolet TrailBlazer out?

What makes a Chevy Trailblazer run too rough?

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