Several times while driving at various speeds the stability control warning light would flash, the door locks would cycle and the gauges would stop working. After a few seconds the warning light would go off and the truck would return to normal. I took the vehicle to the dealer and I was informed that both battery cables had high resistance and needed to be replaced. It is ridiculous that battery cables need to be replaced at 62000 miles. The service adviser made a comment that this was a common problem but it usually happens while the vehicle is still under warranty.

- Bellevue, NE, USA

While driving 60mph on a highway, the truck suddenly lurched and two warnings came on the dash; service stabilitrac and service traction control. The truck also operated under reduced power and I had no control over the accelerator. Going up hills was an adventure. This is a serious safety hazard for this to happen while driving at anytime anywhere. Did extensive research online, and found this is a common problem with GM stabilitrac. Brought truck to dealer for repair and they said this is the first one they had seen with this condition. Truck had 37,400 miles. Dealer replaced throttle control body for free under the powertrain warranty. Truck currently runs fine, but the truck does not idle as well as it used to, slight vibration and stutter, dealer said GM said this is common and not a problem, it is set electronically and cannot be adjusted. Do we really need all this electronic crap?

- East Sandwich, MA, USA

While driving normally (35-40 mph on a residential road) in dry conditions, the check engine light illuminates and the onboard error message reads "service traction control, service stabilitrak, engine power down." Consequently, the vehicle will not travel faster than approximately 40 mph and steering sharply becomes difficult. This error has occurred twice in the 11 weeks we have had our new 2009 Silverado 2500 hd. With the first repair (odometer 1101 miles), they could not find anything wrong with the truck. They just reset the computer. The second repair was 4 days ago (3948 miles). They found the "I/P to body harness connector corroded, cleaned the terminals, and applied dielectric grease." We are extremely fearful that this defect will occur again while we are towing a 5500 pound travel trailer. Without steering, stability and engine power a serious accident could occur. When my concerns were explained to the local GM dealership, the general manager stated that he could not guarantee that they could fix our truck or guarantee it would be safe to tow a trailer.

- Saint Albans, WV, USA