Last year my truck started developing a pause in the engine. I had my local dealer investigate the problem. They stated the fuel injectors needed cleaned so they put in an additive. They stated that the problem was normal after 15,000 miles. A little while longer my wife was driving me to the airport (two hours from my home) during the trip the truck started making the same noise and having the same hesitation problems but with a little more vengeance. When we arrived a the airport we had turned the vehicle off so that I could unload my travel bags. My wife tried to start the truck to leave and could not get it going. I had to leave to catch my flight leaving my wife at the curb with a defective vehicle. I did give her the information for roadside assistance. She contacted roadside help and the truck was towed to a local dealer. They were not able to get the vehicle started and fixed so they got my wife a rental and arrangements were made for the dealer to fix the truck and I would return after my trip to pick it up. During the time I had been gone I had found out through my wife that the dealer felt there was a cracked block and would have the truck fixed for me. On my arrival back in indianapolis I made my way to the dealer. Thinking I had a somewhat new engine. In fact I was told that their prognosis was wrong and that it was just a oxygen sensor that had failed. It was good as new! well here I am not even a year later and having the same problems. This time with all three kids and my wife in the truck and returning from toledo. 30 minutes on the side of the road at night, until it started and limped it home.

- Fort Wayne, IN, USA

While driving at highway speeds the engine shut down and caused loss of power steering. The vehicle was taken repeatedly to the dealer. The vehicle was taken back again and the dealer did not find the problem. The GM technician informed the consumer to not use chevron gas. After GM advised the dealer what to do, the problem was resolved.

- Brookhaven, MS, USA

Cold start knock or piston slap. My 2001 Silverado 6.0L sounds like a diesel when I start it up. Problem began at 11,000 miles. Now have 18,400 miles. - piston slap is louder and more persistent. GM has acknowledged problem, issued service request #, but no service and no response. Very disappointed in GM customer service and product. GM should remedy huge engineering mistake and fix these engines or buy vehicles back!

- Lewistown, MT, USA

Every time the weather is bad, mainly rain, the service engine soon light flashes, and the truck jumps. Sometimes fuel injector cleaner will help, and 2 times the distributor has been damaged. The incident date was the first time the distributor went out, and stranded me in the middle of an intersection, no accidents thankfully. The second time was April 20,2003 after warranty on the first was over.

- Claremore, OK, USA

The vehicle stalled without warning which made it difficult for the driver to control the vehicle. The dealer has been notified.....

- Palm Coast, FL, USA

Flywheel cracked on new vehicle.

- Fayetteville, GA, USA

The engine valves wore out prematurely, the dealer replaced the valves, however the problem recurred.

- Hanford, CA, USA

Vehicle has started to backfire/ shake, and then cut off on several occasion. Vehicle at the dealer.*akthe crankshaft sensor was replaced. Also, the horn is inoperable. The horn relay was replaced.

- Cumberland, OH, USA

The engine shut down instantaneously twice without warning while the consumer was driving 55 mph and 25 mph. The dealer determined the problem was a faulty crank sensor and replaced it.

- Glenwood Springs, CO, USA

A very loud knocking noise is coming from the motor, we have had the lifters replaced, but it still has failed to correct the problem we have contacted the BBB about this problem we are waiting to see where we go from here.

- Dayton, OH, USA

Engine stops instantaneously without warning. Extreme safety problem in heavy traffic as power steering is lost. Crankshaft position sensor has failed in both instances.

- Glenwood Springs, CO, USA

Consumer contatced dealership for a knocking in engine compartment. Dealer engine piston were the incorrect size.

- Moore, SC, USA

After only having this new truck for 2 days the transmission was taken out of it due to a ticking noise in the engine. The mechanic was advised by GM to take out the transmission and replace a flywheel. After 2 weeks of waiting for a part I picked up my truck. The next day the noise was back. I have had 2 GM reps listen to the noise. The secound rep told me that it was "entrained gasses" and that there was nothing they could do about it. I did not purchase this truck making the noise and do not want it anymore after the transmission has been taken out.

- Mount Airy, MD, USA

Engine stalled without prior warning in stop and go traffic, and engine misfired several time daily. Also, transmission clunked on straight away, a torque converter lock up. Dealership was aware of problem.. vehicle was there for four times, vehicle is there currently.

- Santa Rosa, CA, USA

6.0 liter engine is making a loud "pecking" and "clattering" noise during normal operation of vehicle. Dealership has examined vehicle, and informed consumer that noise is normal. Consumer feels noise could be coming from valves in engine.

- Miles, IA, USA

Consumer pulled in field of farm area though grass. He turned vehicle off, left a few minutes, and a young gentleman told him that vehicle was on fire. Smoke was coming from front right tire. He tried to start vehicle, and vehicle stopped. Grass was on fire, and vehicle burned down to the ground. Fire department was called out. He was hurt a little bit.

- Sturgis, KY, USA