Where is the pcm located on a 2003 chevy trailblazer

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pcm tcm location?

https://www.trailvoy.com > ... > Engine Tunes/Mods
Aug 18, 2008 - It is in the engine bay on the driver front side of the motor. Look at the battery and just below it is the ECM/TCM on a bracket right beside ...
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There is no dedicated fuse for speedometer only. There is voltage and ground for the instrument cluster.
The vehicle speed sensor sends a signal to pcm concerning speed then the pcm sends signal to instrument cluster for speedometer.

camshaft position sensor located on 2003 Chevy Trailblazer with 4 2L...

throtle body assembly and re flash the pcm

You didn't say what engine size you have. Here are the 2 different ones that came in the Trailblazer in 2003. I hope this helps and good luck.

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

2003 chevy trailblazer where is the speed sensor location

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.

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

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