BCM 2002 Chevy Trailblazer. Does anyone know how to program? Truck has had a lot of electical issues with it since purchase. Radio function, interior lights, passenger window. Then one day all the lights exterior and interior were not working (more than normal)-due to the BCM, went to dealership and they were unable to program the BCM. Fixed the problem with a relay fuse, but the BCM still needs to be program now that the fuse has been replaced.

There is no separate transmission control module on that truck. The functions of the transmission are combined with the engine control in the powertrain control module, a PCM.

Question moved from Spanish car maker Seat (See-At).

Jeff is our professional auto-electrician tech here, but I will just say this vehicle has a LOT of fuses! As I side note, I hope the airbag doesn't explode when you are playing with the connections!

Chevrolet Silverado (mk2; 2007-2013) fuses and relays

https://fuse-box.info > chevrolet > chevrolet-silverado-...
Fuse box diagram - Here you will find fuse box diagrams of Chevrolet Silverado 2007, 2008, 2009, 2010, 2011, 2012, 2013, get information about the location ...

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There isn't one. The function is done by the Body Control Module (BCM) along with lots of other functions.

Where is the turn signal relay on a 2006 Chevy Colorado?
The turn signal is controlled by the BCM (Body Control Module) that is located at the passenger side kick panel.
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Program mode , What gets in program mode ? PCM / BCM . I/C Any DTC'S - diagnostic trouble codes ? You'll need to do a little better job explaining if you would like help .

You can't disconnect the chime, it goes thru the radio and is generated by the Body Control Module (BCM).

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.

look to see what else is powered by that fuse and power source its some thing in that system and its not the radio. disconect one item at a time and see if it still kills the battery keep doing that till the battery does not die any more and there you find your issue. and be able to fix it this will take some time but you will save lots of $$$$$$ in the end

???>> Do they not guarantee their work???.. I would have a talk with the manager..(NOT the service manager).. the owner...or the service managers boss!

The only way to program them is with a scan tool so you'll need to visit your local dealer to have it done. Here is how it is done.

1. Install a scan tool.
2. Use the scan tool in order to access programming: Vehicle Control System/Computer Integrating System/Module Setup/BCM/Program Key Fobs.
3. Press the START soft key on the scan tool. Important: The scan tool must stay connected until all of the transmitters are programmed.
   
4. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of 5-10 seconds, the scan tool will indicate that the transmitter is programmed.
5. Repeat the previous step in order to program up to 4 transmitters.
6. Remove the scan tool.
7. Operate the transmitter functions in order to verify correct system operation.

Are you trying to Play Burned CD's???? If Not, This IS a Common Problem on Chevy CD Players, My 95' Silverado went out and it was going to cost as Much for a New one as for an Aftermarket. Went Aftermarket. A LOT of people are having the Same Problems.