While driving, approximately 70 mph, the truck shuts down completely. No power brakes no power steering, no power anything. After 5 to 10 seconds truck starts back up on its own, sometimes. Very dangerous when hauling a heavy load. This happened more than once, was intermittent and varied in frequency. I changed crank sensor and problem has not occurred. GM dealerships where not very helpful.

- Haslet, TX, USA

: the contact stated at various speeds the vehicle stalled without warning. The vehicle did not restart and was towed to the dealership who replaced the distributor cap and rotor three times, but the problem persisted.

- Massapequa Park, NY, USA

Ignition system failure. The consumer experienced several failures of the ignition system in which the vehicle had to be towed on several occasion. The problem was determined to be an air conditioning hose which was routed directly over the distributor. The GM engineering felt that condensation from the hose falling onto the distributor was causing the repeated problems. In order to correct the problem the hose was wrapped in foam, however in March 2004 the vehicle felt as if it was misfiring. The dealer determined the distributor was corroded. The distributor was replaced several more times due to corrosion. The dealer replaced the coil wire.

- Carlinville, IL, USA

While driving about 50mph vehicle will sputter, /barely idling, and then stall in middle of an intersection. Vehicle checked by dealer 3 times, who advised consumer that he could not duplicate problem.

- Marion, NC, USA