I converted my 03 sierra from manual to power windows now every thing is in place nothing works . i took the parts out of another 03 crew cab w/ duramax so the trucks are the same. what did i miss.. I have the door panels /w switches the whole harness from the juntion blocks please help I know its probally some thing simple also now when i lock all 4 doors by hand then drive some place the rear doors only unlock themselves

 

its all bcm controlled..you need the bcm out of the other truck,then a reflash to your truck

 

what is the bcm tech is referring to that controls electric windows and locks.. I have a 2003 Silverado manual and bought all 4 doors off a 2005 GMC Silverado.. got all plugs and everything is plugged up but not sure if I need to get a relay/fuse ? Can't find anything to 'fire them up !!

 

forgive my 'newbieness' .. just bought a well worn 2003 Silverado extended cab work truck and replaced all doors from a 2005 GMC Silverado , everything is plugged up but no juice to the doors except for sound from speakers ? what is BCM tech is referring to and where is it located ? It's another 75 mile trip each way to go get whatever I need from 'donor' truck.. need info asap before I can't locate parts... Thanks for info... O.

 

Did you install the fuse or breaker for the power door locks?