Two problems related to fog light switch have been reported for the 2005 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Chevrolet Impala based on all problems reported for the 2005 Impala.
I was driving at approximately 40 mph on a straight roadway with brights on when the headlights went out. This occurred in the early morning while it was still dark out. The parking lights remained on. Pulling the headlight switch on the left side of dash to the "manual on" position did not help. I turned on the fog lights and returned home using the fog lights only. Upon arriving home, I was able to get the headlights to work again by switching to high beam and back. This has been an intermittent problem for this vehicle in the past month. The multifunction switch felt like it was fully engaged and gave an audible click when pulled. I have ordered a replacement multifunction switch to repair this.
I was on my way to work at at 6:30 am on 9-24-13 when my headlights went off. It was pitch dark and I was totally without headlights. I was able to turn on the fog lights this car has, but it was still hard to see. I have noticed the lights seemed dimmer than what I consider normal. I made an appointment with a local mechanic. He cannot find the reason for the dim lights or the lights going off by themselves. This is very dangerous and I am surprised a recall has not been issued to address this very serious safety issue. When I conducted a google search I noticed that this is a common problem with a number of gm vehicles. It is a wonder I did not crash my vehicle as I never expected my light to go out as I traveled down a highway.