After just a few years of ownership, my 2003 denali, which I purchased brand new, started to have "power down" issues. While driving, the vehicle would just loose power and I would have to pull over and restart the vehicle. Gmc has always acted as if it was not a big deal and have offered many expensive solutions. Early on I tried their recommendations and it would help for a while but the problem always comes back. Further, all of my gauges have quit working. Again, gm offers very expensive solutions, but...
Read the full complaint
will never own up to the fact that these vehicles are defective. After going through this for several years, I googled these issues and discovered that there are pages and pages of complaints about the same issues. I love my vehicle and now have 230,000 miles on it. However, I know that this is very dangerous and I am always conscious that it can happen at any time. I am always prepared to pull over but there have been times when I was nearly rear-ended because of this issue. Also, I rarely let any other family member drive the vehicle and when I do I warn them of the issue so that they are prepared. This issue is first and foremost very dangerous and secondly a true hassle and inconvenience. My check engine light comes on every time the vehicle powers down. This has caused me to have trouble passing emissions as well. I have wanted to trade or sell the vehicle but I am concerned about my liability knowing about this issue. *Tr