Question about 2003 Chevrolet Trailblazer Ext

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Why the tachometer of my chevy trailblazer is not working?

I have a Truck trailblazer 2003 but the tachometer is not working

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  • 101 Answers

Check speed sensor or a fuse

Posted on Nov 26, 2013

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Posted on Jan 02, 2017

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DrSpeedo
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SOURCE: 2004 Trailblazer tachometer problem

On the 03-06 Trailblazer instrument clusters this is a common problem. It's caused by a failing stepper motor on the cluster's circuit board and can be repaired. Check out this page for more about how to get it fixed and other common cluster problems with the Trailblazers - Trailblazer tachometer broken

Posted on Sep 30, 2010

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SOURCE: All warning lights flashing on dash of chevy

All warning lights flashing on dash of my 2002 chevy trailblazer. Runs fine all gagues go dark and turn back on every now and then. Also the gagues all go to the right or stick half way like I am idling at 5000 and going at a speed of 60mph when I am sitting still. I am thinking it has something to do with my computer because the rest of the truck is working just fine.

Posted on Jun 03, 2009

  • 1 Answer

SOURCE: replace low beam headlight on 2003 chevy trailblazer

I just replaced the low-beam bulb on my 2003 Chevy Trailblazer. The grill just needs to be loosed slightly. Then, raise two L shaped brackets, one on each side. For the inside one, I needed to use a flathead screwdriver to get to it. The light assembly can then be pulled out. Remove the rubber cover and rotate the bulb one quarter turn left to release it. Pull out the bulb, replace with a new one ($11.50) from Advance Auto Parts, and reverse the process. Once I figured it out, took about 10 minutes total.

Posted on Nov 06, 2009

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1 Answer

What can coz a 2005 chevy trailblazer tachometer not to go over 3000 and won't go passed 5 mph


Karen, the vehicle should be scanned to see if there are fault codes, the truck may be in limp mode due to a engine or sensor issue.

truck went into limp mode and need help
What is Limp Mode Causes What to Do

Mar 19, 2016 | Cars & Trucks

1 Answer

I was wondering if a transmission from a 2003 Chevy Silverado will interchange with a 2003 Chevy trailblazer


Without seeing the truck or transmission i can't give a definite answer but i can provide you with what to look for. The biggest thing is engine. In theory you can but the engine power output determines if the transmission will hold up.

Dec 27, 2014 | 2003 Chevrolet TrailBlazer

3 Answers

How do I reset door locks on my 2003 chevy trailblazer?


Door locks don't reset. the work or the don't. If your talking about the fob. It has to be reset with a scanner.

Dec 08, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

2003 chevy trailblazer tach inop


The tachometer in your truck is controlled by the Instrument Panel Cluster (IPC) module, which recieves engine speed information from the Powertrain Control Module (PCM) via the digital communications network in your truck.

There may be an engine control problem that is causing your engine to run rough and cause your tachometer to not operate as well. However, there is no way that the tachometer itself is going to make the engine run poorly. The tachometer has no fuse of its own that does not also affect several other electrical circuits in your truck. Looking for the fuse as a possible fix for your problem is totally useless.

What you need to do is to scan your onboard computer network, incluuding the PCM, BCM, IPC and the ABS modules to see where the problem is located. It may even be a communications network error. There is no way of knowing for sure without establishing communications with the network and interfacing with all of the control modules that use the tachometer signal to perform certain functions.

PLEASE NOTE: Generic OBD code readers CANNOT perform the functions that will be needed to diagnose and repair this problem.

May 06, 2012 | Cars & Trucks

1 Answer

I have a 2003 Chevy Trailblazer with a malfunctioning tachometer and speedometer. What is the likely part I need to replace?


Sounds like a bad speedometer sensor. Usually located on the transmission. The only way to fix the speedometer is to replace the sensor.
The Variable Speed Sensor (VSS) has failed. You will have to get it replaced. Both are driven by an electrical signal sent to the cars computer by the VSS, and converted to SPEED, and DISTANCE driven.

Aug 22, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

2003 Chevy TrailBlazer..bad rattling under truck and feet.


It could be a bad rear blower motor, or resistor? theres a lot under the truck that could make noise, have a repair shop check it and make repairs.

May 13, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

2003 Trail Blazer Tachometer .... I passed


The trailblazer / envoy vehicles have instrumentation problems. A sweep test with a scan tool will likely reveal a problem with the tachometer in your instrument cluster. It can be repaired by any number of dedicated repair facilities or the entire cluster can be replaced. I heard that there is a recall of these, but do not know for certain. It might be worth a call to a chevy dealer to see if it is.

Jan 14, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

2003 trailblazer, some of the guages are not working, the battery guage, the tachometer, and the speedometer


On the 03-06 Trailblazer instrument clusters this is a common problem. It's caused by failing stepper motors on the cluster's circuit board and it can be repaired. Check out this facebook group dedicated to the problem - My Trailblazer Gauges Are Driving Me Crazy!

Sep 28, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

All warning lights flashing on dash of chevy trailblazer 2003. Runs fine all gagues go dark like truck is turned off but runs fine


All warning lights flashing on dash of my 2002 chevy trailblazer. Runs fine all gagues go dark and turn back on every now and then. Also the gagues all go to the right or stick half way like I am idling at 5000 and going at a speed of 60mph when I am sitting still. I am thinking it has something to do with my computer because the rest of the truck is working just fine.

May 18, 2009 | 2002 Chevrolet TrailBlazer

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