The wiring for the lighters, power ports and computer link melted. It's all part of the under-dash wiring harness.

- Ozark, MO, USA

Truck door is not opening, fuel gas defective, rear light system has electrical problem all the times, A/C system electrical problem.

- West Palm Beach, FL, USA

Air conditioning will randomly switch to hot air while driving. If you stop and restart the car air conditioning will work again.

- Pensacola, FL, USA

The rear liftgate will not unlock. There is no manual release or "key bypass" for the rear liftgate lock. This presents a serious safety issue in case of fire or crash.

- Sheffield Lake, OH, USA

As has been reported by many others, it appears that Chevrolet's problems regarding the instrument cluster in their light trucks extend beyond the 2003 and 2004 model years for which they were "offering" to extend the warranty to 70,000 miles. The speedometer in our Suburban also began reading erratically about a month ago and has now pegged itself and is stuck at 120 mph. Fortunately we did not have any incidents when the speedometer failed. However, I believe Chevrolet may have a continuing problem and more should be done to correct this very important safety component. Additionally, I would also like to mention that while I was searching for other incident reports on this matter, I discovered that the scope of this problem may be masked by the fact that it is applicable to numerous different models and years. It might be helpful for you to compile the reports for all models of the Suburban, Yukon and Silverado trucks and their GMC clones for the 2003 to 2005 or 2006 model years. I believe that if you combine these different models, you will see that the scope of this problem is quite larger than it might appear for each of these models separately.

- Hagerstown, MD, USA