How to reset BCM on gmc canyon - 2005 GMC Canyon

There are two relays, a diode, BCM, multifunction switch, and all the wiring/connectors between. There are two power inputs to the wiper motor that determine speed. The BCM interprets the selections from the multifunction switch and commands the two relays for speed and intermittent.

Start at the wiper motor and verify low speed power is not being provided and work your way back through the relays, then the BCM, and the multifunction switch.

Your car's fob can't be programmed like that .
Transmitter Programming
Important: Up to 4 transmitters can be programmed. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle. The order in which the transmitters are programmed is important. The first transmitter programmed will be transmitter #1, and the second transmitter programmed will be transmitter #2. Use care to program the transmitters correctly.
Important: All key fobs must be programmed each time any one fob is programmed. The scan tool must stay connected until all of the transmitters are programmed.
Install a scan tool and navigate to the BCM Module Setup menu.
Select Program Key Fobs.
Follow the scan tool on-screen directions.
When the programming operations have completed, operate the transmitter functions to verify correct system operation.

It sounds as if the constant power to the BCM has somehow gotten moved to switched power.

You take it to a qualified GMC dealer . You have no idea the problems that can come from not programming the new one . An can't use a used one .

I should be part of the emergency switch assembly

Check with your local dealer , there maybe a recall on the BCM. Body Control Module

You are right.

You can download the owners manual for your 2004 GMC Canyon from the following link.(http://www.extendedgmwarranty.com/owners-manual/gmc/2004-GMC-Canyon.pdf ).Your valuable feedback would be appreciated.Thanks for choosing Fixya.

TinuAlbinAlex

have your plug ins changed they have had a lot of trouble out of them

i answer our post thanks pierre