Driver side mirror over shoots and passenger door issues

[-JustinS-]

So I have a 2017 gmc sierra Denali 6.2 1500 with aftermarket tow mirrors and almost a year ago my mirror was over extending and thought oh maybe I need to get new mirrors but it still dose it and then the whole passenger do isn’t working properly like window won’t go down and the whole mirror didn’t do anything but it still locks so I started to look into it and figured out may be the bcm so got that replaced and had someone else program it because my shop can’t do it and it did nothing but recently my passenger door will work for a sec then stop working and so If it the door is open when I stops working it likes to read that the door is still open. So I’d like to see if anything can help me with this? 

[Snowcamo]

You can insure you have a good connection at all the connectors from inside the door leading back into the cab. Maybe try to unplug the mirror and see if that changes anything. 

[Binder49]

I had the same issue with my passenger side mirror not working on my 2014 Silverado. Turned out to be broken wired in the drivers door jamb inside the rubber boot. The door harness is not available new, so I repaired the wires. Everything works perfect. Once you take the door panel off and remove the speaker, you can disconnect the wires at the cab side of the jamb and pull them through the door. Gives you alot more room then trying to repair them in the jamb. I had 4 or 5 broken wires. The job isn't as bad as it sounds, just tedious. I soldered the wires and used heat shrink. Also check the other wires for insulation cracking. I would start with the drivers door becaude it get used more.

Edited February 11 by Binder49