2003 2500hd lighting problem

[bob62]

i have a 2003 2500hd 8.1 with 6 speed manual trans and i am having a problem with both backup lights and the interior overhead dome light they do not work.I recently had an accident and destroyed the left rear tail light in which has been replaced with all new bulbs and ever since the accident these lights mentioned above have not worked any advice?

[8.1HD/ALLISON]

Have you checked fuses? If they are ok follow power on wiring diagram. There is a fuse , 20 amp in the underhood fuse box. Then goes through back up lamp switch. Then through the bcm. Don't show that interior light is on the same circuit. Probably different problem.

[gmtech4]

alldata.com ,

 

no brainer

[bob62]

Have you checked fuses? If they are ok follow power on wiring diagram. There is a fuse , 20 amp in the underhood fuse box. Then goes through back up lamp switch. Then through the bcm. Don't show that interior light is on the same circuit. Probably different problem.

 

Have already checked the fuses all good there

[gmtech4]

see post 3 !!