2003 Pontiac Montana electrical

check circuit breaker in rh fuse box see if it is sending power may be the power window switch on driver door. dome light check fuse and override switch may be that and then scan for codes for body module. try resetting security system as well.

I have checked all fuses under the hood and inside all are good. The security system I can not reset. Tried to reset by the manual and nothing happens. Had to bypass the horn because with the fuse in the horn continues to sound. I even took the vehicle to a dealer and they could not figure anything out. no codes nothing.

unless one of the door switches are screwed up it may be the body module but it could be an anti theft module as well. . check grounds in pic and see if any door switches are broken etc. if the body module is replaced a pro has to do it because it has to be programmed to your car. but any garage can do this anyhow not only a dealer. Other than that without seeing this vehicle myself and trying a scan I have no other suggestions.

Thank you for the advice. I will check that all out. Also what got me yesterday was that the electric mirrors work but nothing else in the door. that is strange, but will check it all out.

if the motors work then the cable to make window go up and down are broke dorman is a good supply place for that as it's alone piece probably they are online