My truck has been blowing hot air when on cool. When it started doing it, I noticed sparks coming from what appeared to be my ac unit. This is a safety hazard. I believe that my actuator blend doors need to be replaced but do not know for sure.

- Holly Springs, MS, USA

I have several broken bolts on my exhaust manifolds. My check engine light goes on and off for emissions related codes. I will not be able to pass a smog test unless this is fixed. Several auto shops want about $1,000 to fix this. Its an ongoing problem and is known by Chevy/GM and yet they will do nothing to help or fix it. This should be recalled immediately!

- Tehachapi, CA, USA

While idling at a red light the smell of exhaust fumes became prevalent inside the passenger cabin. Upon inspection of the exhaust system it was determined 5 of the exhaust manifold bolts had prematurely failed allowing exhaust gas to escape from the engine into the engine compartment and into the passenger cabin. The vehicle is currently used sparingly where family members or friends are not allowed to ride in the truck until the exhaust manifolds are repaired.

- Hackettstown, NJ, USA

: the contact stated intermittently, when the outside conditions are cold the steering is stiff. This occurs at any speed. The problem is worse when the brake pedal is depressed and turning the steering wheel. The dealership replaced the valve in the power steering. This has not corrected the problem. There is a technical service bulletin, #10013533, regarding this, but no repair available. The water pump gasket was replaced. The transfer case bearings were replaced. Updated 03/22/06.

- Slippery Rock, PA, USA

A/C stops working. Pressure switches changed, coolent recharged, now they are adding an electric fan to help cool the condenser. Can't figure out what is wrong.

- Harrison, MI, USA

After the vehicle had been parked for a week, a fire started under the hood. The fire was put out and the dealership was notified. The problem was not resolved. The cause was not determined.

- Groton, NY, USA

The engine sensor continued to stay on without warning. The consumer was concerned that the vehicle will stall while driving. The dealer replaced the fuel module seal, however the problem still continued. Please provide additional information.

- Lawrenceville, GA, USA

First time:main computer failed. Second time:stalling, running rough, boggs down and makes loud noise, mis-fire in #5 & #6 cilander.A/C not working.not fixed. Third time: Everything same as second time and engine light now coming on.not fixed. Fourth time:all lights on dash come on and all messages appearing on message board.not fixed. After computer changed truck preformed unsatisfactory and is still unsatisfactory. All having to do with computer. Told it is a random problem that is hard to detect and may not ever be fixed.

- Brunswick, ME, USA

While driving 65 mph the vehicle stalled without warning. This caused a lost of steering and brakes. The vehicle had been inspected three times and could not be reproduced. The first problem occurred when the consumer was traveling at 75 mph down a slope when the vehicle lost all power (engine, brake, and steering) the consumer would have to turn the switch four times in order for the engine to start. The problem repeated itself two more times with similar instances.

- Santa Ana, CA, USA

Consumer states the check engine light comes on then vehicle would shut off. Some days the vehicle would run all day without shutting off dealer notified.

- Reno, NV, USA

Consumer states while driving and no warning. The check engine light would come on, then the vehicle would shut off. Some days the vehicle would go all day without shutting off. Consumer states so far the vehicle shut down 8 times. Dealer notified.

- Reno, NV, USA