lafken75

Hello all, I have a 2006 C6 and about two weeks ago I noticed that the windows and the power mirrors would quit working and the security light would come on, it would return to normal function after driving for a while but now it never comes back. The windows do come down to allow the door to open and they do roll up when the door is shut. My buddy has a computer scanner and was able to roll the windows up and down using that and upon scanning found 2 codes, the first is U1000 (Class 2 Data link) and the second is U1164 (Lost communication with Driver door switch). Does this mean bad switch or could there be another issue?

RicK T

Those communication errors can be difficult.

I suggest you put a new battery in the car first, OR at least have the current one fully tested. That may solve everything. But once you have a known good battery the troubleshooting becomes meaningful.

LMB-Z

lafken75

Thank you for the reply. I forgot to add that it does have a brand new battery and I have checked all the connections for the battery.

Gilrodz

Do your power lock buttons work I am having the same issue and cant figure it out my driver side door works but just the button to get out nothing else? let me know I have read a few forums that say its a bad bcm and not sure if you can simply replace or have dealer replace.

pind

you guys figure this out? Im fighting the same issue with no luck of a solution.

Gilrodz

I have another bcm I got I am going to try that and see if it will help my case. I will keep you posted if it turns out to be the problem.

pind

sooooo nothing in my driver door would work except the button to open. I also had a security light on. The fix i found was a broken red with white stripe wire between the door and the body. I pulled off the door panel and removed the door speaker. I also removed the seal trim and a cover just above the hood release. There are two connections there that can be undone and allows you to pull the wires back into the door. I then undid the loom and found the wire. Hope this is helpful to someone, took me forever to find lol

Gilrodz

That is great news I tried changing out the bcm with no luck I will try and see if I have any damaged wires just like you posted thank you for your help.