Hey guys I'm new to the forum. I just got a 2003 5.3 4wd truck. I bought some after market mirrors and when I installed them everything bolted up fine. But now the passenger side is practically dead, the electric door locks aren't working, the power window quit working. The driver side works fine, but my key fob is no longer working and my four wheel drive light is staying in neutral. I'm at whits end. I didn't realize mirrors could cause so many problems. Anyone else have any ideas what's causing the problems? Thanks in advance.

 

I had a loose connection on my pass side window switches give me fits. Would work then it wouldn't. Reseated the connectors and all better now.

I'd check your connections, if those check out look for some damaged wires. Good luck!