Body control module location 2002 Chevrolet Silverado 1500 w/4.3l

Here are all your fuses and relays. There is only a relay for the trailer lights. In modern vehicles the turn signals are a function of the body control module.

Chevrolet Silverado (mk3; 2014-2018) fuses and relays

Fuse-Box.info https://fuse-box.info > chevrolet > chevrolet-silverado-...

It is located on the side of the instrument panel, on the passenger side, behind the cover. The location of the fuses in the passenger compartment: Chevrolet ...

Truck Body Control module aka Body control module..
things like locks,windows,wipers,etc on most new vehicles the switches you use don't go directly to the device they just send a signal to the module that sends it to the device telling it to do what it is supposed to do.
Hope that isn't as clear as mud.

the remote entry lock module, ensure the Body Control Module (BCM) is correct for your 2002 CHEVROLET TRAILBLAZER with a 4.2L engine. Special restrictions like "California only" or "with sport package" may indicate a Body Control Module (BCM) fits only certain 2002 CHEVROLET TRAILBLAZER models.
the bcm has to be programmed by a dealer,go to your dealer to make sure that is the problem,it could also be the ignition switch,it usually mimics a bad bcm,a switch is cheaper.

The tps is on the side of the throttle body.

on the throttle body on inlet manifold

the TCM (transmission control module) is part of PCM (powertrain control module)

there is not a lighting control module on the 2005, the lights are controlled by the body control module and it is located on the left side of the dash below the steering column.

what kind of problem are you having?

On the lower left side of the intsrument panel below the steering column is where you can find the body control module

the radio needs to be programmed at a gm or chevrolet dealer the vin numbers in the radio dont match the vin numbers located in the body control module.

Please use this link :

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152801b6773


Good luck...