Three problems related to fog light switch have been reported for the 2006 GMC Envoy. The most recently reported issues are listed below.
I purchased this vehicle with new tires on it. Excessive tire wear was starting on the drivers side tire before the year mark of me purchasing it. There was no recalls open on that time that we could find. I have had to replace the fog lights on several occasions. It had electrical short that no one seemed to find and there was no way to locate without expensive diagnostic time. When I went to the dealer about recalls they informed me the only open was a window switch. After a front end accident at 30 mph the tire blew out on the drivers side on impact. I was informed in my estimate that there was a open recall which could lead to incorrect rim selection / tires for the car causing air leakage and possible accident. If I had known this before hand maybe this could have been prevented!.
Headlights go out. Has happened several times while driving and 1 time would not come on when vehicle was started at night. If we had not had fog lights, we could have a bad accident or at very least been stranded on the side of the road.
While driving my headlights have begun to cut off for about 5 to 10 minutes, then come back on. If not for my fog lights I would not be able to see.