Question about 2004 Chevrolet TrailBlazer

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Price for a PCM for 2003 chevy trailblazer - 2004 Chevrolet TrailBlazer

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6ya6ya
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Posted on Jan 02, 2017

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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

BCAS1298
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SOURCE: what is the pcm in a 2004 chevy trailblazer? and

PCM is what control's all of your engine sensor's, there's no repair for the PCM, but to replace.

Posted on Nov 09, 2010

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SOURCE: 2003 trailblazer keeps blowing pcm

YOU HAVE MANY THINGS THAT CAN BLOW THE PCM FUSE.STARTER RELAY,ALTERNATOR, PARK NEUTRAL SAFETY SWITCH, FUEL PUMP, AND THE PCM CAN BE SHORTING OUT.

Posted on May 02, 2011

c17hydro
  • 2984 Answers

SOURCE: where is the pcm located on a 2003 chevy trailblazer

5.3L Engine

The Powertrain Control Module (PCM) is located on the left front frame rail.

4.2L Engine

The Powertrain Control Module (PCM) is located in the engine compartment. It is mounted on the left side of the engine.

Posted on Nov 30, 2011

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1 Answer

Need to reset the PCM on my 2003 Chevy Trailblazer .How do i do it?


Disconnect the NEGATIVE battery cable from the battery... Hold it or position to the POSITIVE battery cable for about 5 minutes. Also make sure you leave the key in the ON position (Do not have the engine running) and this will clear the memory on all computers/modules in the truck.

Jul 04, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

Code p1221 on 2002 Chevy Trailblazer


throtle body assembly and re flash the pcm

Jun 15, 2012 | 2003 Chevrolet TrailBlazer

1 Answer

Where is the pcm located on a 2003 chevy trailblazer


5.3L Engine

The Powertrain Control Module (PCM) is located on the left front frame rail.

4.2L Engine

The Powertrain Control Module (PCM) is located in the engine compartment. It is mounted on the left side of the engine.

Nov 28, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

I just wanna know how to check timig on my 2003 chevy trail blazer? thanks


YOU CANT CHECK OR SET IGNITION TIMING BECAUSE PCM CONTROL IGNITION TIMING AND FUEL TIMING.

Jun 30, 2011 | 2003 Chevrolet Trailblazer Ext

2 Answers

What is the pcm in a 2004 chevy trailblazer? and how I can fix it.


PCM is what control's all of your engine sensor's, there's no repair for the PCM, but to replace.

Nov 09, 2010 | 2004 Chevrolet TrailBlazer

2 Answers

I have a 2003 chevy trailblazer and the low beams stopped working


Check the relay in the relay/fuse box under the hood. There should be a diagram either on top of the cover or under the cover to tell which relay it is just like your internal fuse box.

Mar 29, 2010 | 2004 Chevrolet TrailBlazer

1 Answer

2003 chevy trailblazer....idlind at 600-750 rpms, when i engage the a/c it drops to 500rpms then stalls. also have two codes, p1481 and p1482. whats wrong?


The coolant fan clutch or the electric connections to the fan clutch is code1482.

Code 1481 is associated with the coolant fan problem but concerns the PCM having an error.

This error is why your car is stalling. The fan clutch is variable. When it is fully engaged the fan has more resistance and pulls down the rpm. The PCM is suppose to respond to this and raise the rpm for a steady idle. It is not doing it and needs a software upgrade.

The Chevy dealer may have a service note on this problem. The upgrade may be free.

Aug 24, 2009 | 2003 Chevrolet TrailBlazer

1 Answer

2003 chevy trailblazer P0182 code


I think there is a update for the pcm for that code and for the loud cooling fan best I remember

Aug 05, 2009 | 1999 Ford Expedition

1 Answer

2003 Chevy Trail blazer says service engin soon?


you have a trouble code stored. This means the pcm has detected a problem somewhere

Jul 30, 2008 | 2003 Chevrolet TrailBlazer

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