Wiring Problem.. Help Please! **

[buckle831]

Hey guys i am new to this forum to posting in this forum but ive used alot of articles to help me fix problems ive had with my 2007 GMC Seirra SLT 1500 (New Body).. ive ran into another problem this time wiring and i cant figure it out so im turning to you guys for help and suggestions!

 

So:

 

the other day after i parked my truck and shut it off i opened the door and the stereo stayed on which was wierd, didnt think anything of it and later on got back in the truck and drove around again nothing was wrong. When i parked it later i had the same problem and then tried turning the key on and off and nothing, after that i noticed that i had no power windows, locks, heated seats, mirrors, or turn signal in my mirror.. so i grabbed a test light followed the wiring harness to the plug on the fuse panel inside the vehicle, the big red and white wire has power and the small brown wire has power, all the other wires have no power going through them to the door ive pulled all the fuses and they are all good, so now i am stumped and i dont know where to go checking next before i rip my whole dash apart trying to follow wires i thought i would ask on here and see if anyone else has had this problem.. key fob lock and unlock does not work for drivers door, all other door locks work and all other power windows work it is only the driver side door that has no power.. the speaker works but that is a seperate wiring harness. If anyone can help me with this problem i would appreciate it lots cause its starting to get on my nerves and annoy me as its been a week and i havent been able to figure it out.

 

Thanks guys!

Bryan

[efritz]

Unfortunately this will likely be impossible to diagnose over the internet. Your best bet would be to pull BCM codes.

[intheburbs]

Start with the basics. Disconnect the negative wire from the battery and let the truck "reboot." Reconnect it after 15 minutes and see if anything improves.

 

Kind of like Windows - when in doubt, re-boot.

[buckle831]

Unfortunately this will likely be impossible to diagnose over the internet. Your best bet would be to pull BCM codes.

 

So i would have to take this into a shop to get the codes pulled then?

 

Start with the basics. Disconnect the negative wire from the battery and let the truck "reboot." Reconnect it after 15 minutes and see if anything improves.

 

Kind of like Windows - when in doubt, re-boot.

 

was the first thing ive tried, didnt help.. the first couple days of this happening if i slammed the door hard it would work again and the door would have power almost like a bad ground, is there a ground wire connected behind the door panal that could cause this problem?

[efritz]

There are usually shops that specialize in automotive electrical work, see if they can help you

[Colossus]

Sounds so much like the freaky ocassional electrical gremmlin I had with my 2007 (GMT-900) Sierra 1500... There have been a number of other folks who have had these crazy issues as well. I traded the truck in when I got my 2008 Duramax and the dealer still hadn't been able to duplicate the issue in order to be able to repair it... I even had to pay the $150.00 towing bill when I couldn't get my truck to start (no power, no nothing!) yet it fired right up in the service bay when they unloaded it off of the tow truck. "Could not duplicate problem, drove truck for several days, unable to duplicate problem)

 

There will be no codes stored more than likely so don't waste your money unless you have a check engine light that is on. I seem to recall someone mentioning a grounding issue on one of their 07s with the same sort of problems, so I would check ALL the ground connections really well. Start at the battery and work your way from there. if it looks tight, take it off and tighten it again.

 

Good luck

[buckle831]

i found out what the problem was and fixed the wiring issue, turns out there was ground on the chassis side plug but not on the switch side so i found the broken ground wire between the door and the chassis inside the rubber grommet, im assuming it may have been cause from living in Calgary and working up north where it hits up to -50 degrees C'