Body control module wiring diagrams and pin out?

Tiny
GOLFLION49
  • MEMBER
  • 2003 CHEVROLET SILVERADO
Key fob door lock/unlock will not work. Passenger door will not auto lock or unlock. Passenger door window will not work. Normally the radio will play for a few minutes after I turn off the key. Now it shuts off when I turn off the key. Where is the body control module?
Do you
have the same problem?
Yes
No
Wednesday, August 18th, 2010 AT 8:35 AM

7 Replies

Tiny
KEN L
  • ADMIN
Hello,

This problem could be the BCM which is located under the dash on the drivers side. But I would start by checking 5 fuses that could be causing the problem as well. IF the fuses are good the BCM is probably bad which you can replace but it may need to be programmed to work correctly.

Here some guides and diagrams to help you get the problem fixed.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-wiring

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken

Was this
answer
helpful?
Yes
No
+3
Monday, April 13th, 2020 AT 6:22 PM
Tiny
LOUD PELLETIER
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 8.1L
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I would like to have the BCM pinout diagram for the truck listed above lt and if possible the pinout of accessoire in the cabin too. Lt example: power windows, door lock, radio, heated seat etc. But especially the BCM.
Was this
answer
helpful?
Yes
No
Thursday, May 13th, 2021 AT 8:14 PM (Merged)
Tiny
STEVE W.
  • EXPERT
Here are the BCM connectors and the systems they deal with. Also the wiring diagram for the BCM. For the others if you could tell us if it's a regular or crew cab and 2500 or 3500 it would narrow down the items you need. Also could you say what you are doing or if you have a problem? It sort of sounds like you are doing some swap work or a rewire. Thank you.
Was this
answer
helpful?
Yes
No
+12
Thursday, May 13th, 2021 AT 8:14 PM (Merged)
Tiny
LOUD PELLETIER
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • 8.1L
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
I would like to have the bcm pinout diagram if possible the pinout of accessoire in the cabin example: power windows, door lock, radio, heated seat etc. But especially the bcm.
Was this
answer
helpful?
Yes
No
+1
Thursday, May 13th, 2021 AT 8:15 PM (Merged)
Tiny
KASEKENNY
  • EXPERT
Please see the information attached. This is the wiring diagrams and pinout for the BCM and accessories. Please let us know if you need other info and we can go from there.

Thanks
Was this
answer
helpful?
Yes
No
+1
Thursday, May 13th, 2021 AT 8:15 PM (Merged)
Tiny
TAWAS23
  • MEMBER
Wanted to thank you for the help ended up replacing BCM and fixed the issue, thanks again.
Was this
answer
helpful?
Yes
No
+1
Friday, June 17th, 2022 AT 8:13 AM
Tiny
KEN L
  • ADMIN
Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help.

Can you please leave us a rating? (Copy entire link)

https://www.google.com/search?q=2carpros&gs_ivs=1#lrd=0x80dcd47364be5d0d:0xba091aa4209f4497,1,,,&tts=0

and

https://www.sitejabber.com/reviews/2carpros.com
Was this
answer
helpful?
Yes
No
Friday, June 17th, 2022 AT 12:19 PM

Please login or register to post a reply.

Sponsored links