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