BCM

[carmenaguirretx]

I need to replace my BCM. Do I have to buy a new one and have it flashed and programmed by the dealer to make it work in my 2004 z66? I’ve heard plug it in and relearn process and I’ve heard no take to dealer and I really hate the dealerships cause they screw your good without a thank you! Can anyone point me in the rite direction please?2004 avalanche black on black with vogue 26”s and custome Midgate 15”sub enclosure tuned to 32htz!

 

[ygmn]

why do you have to replace it?

 

[carmenaguirretx]

Power locks on key fob don’t work, no signal to injectors, fuel pump, no start ,fuel level gage no working, one headlight no work Cranks like crazy it no start. All signs of bad bcm

 

[ygmn]

Or bad grounds
or bad wiring

injectors controlled by ECM not BCM.
Power locks could be need to program FOB or controller s out.

but if you want to change parts for parts sake we cannot stop ya but proper troubleshooting is best

 

[MS03 2500]

Hopefully they checked fuses, one of the reasons the injectors aren't pulsing is the theft system is on. But no codes it's only a guess.