Recently took car for balancing and rotation at ntb. They saw oil dip was dry and was low oil level. Took it back to shop who did oil change one month ago. They said oil is vaporizing. I didn't understand how. Tech showed me black sluggish inside tail pipe saying that could be bad catalytic converter and it could have caused because of oil burning inside exhaust. I researched online about this issue and did find out that all GM & Chevy owner having this issue with V8 engine on any liter. Shop replaced knock sensor twice but still service engine light came back on. It is very expensive repair cost to replace broken bolts on manifold. I hope manufacture will fix this issue as soon as possible so that consumer don't have to go through not passing state inspection.

- Sugar Land, TX, USA

The part of the frame that holds up the gas tank and connects to the shock has rotted away. I had to replace both rear leaf spring shackles do to rust as well as the left rear brake line. The rear of the truck is rusting away. I have had to replace the fuel pump, there is a knock in the steering column that I have had fixed once already, the engine has ticking sound when idling, and the A/C compressor is broken.

- Charlton , MA, USA

Exhaust manifold bolts breaking leaving studs in the heads, heating up engine compartments, releases carbon monoxide, affects O2 sensor and catalytic converter. Will not pass emissions in some states. GM not standing behind this 1999-2008 issue. It is a safety issue and is expensive to fix. GM mechanics denying any such issues. Please check- in to this. Our whole fleet and our personal trucks affected by this.

- West Lebanon, IN, USA

Exhaust manifold bolts breaking off leaving studs in the heads (4) my late 2002 Chevy Z71 developed an exhaust leak and the catalytic converter started banging at idle or after parked. Engine has black exhaust on the head where we found the main leak. So, carbon monoxide has been coming into the cab and the engine compartment seems hotter than normal. When checking into the issue, I found every truck in our company fleet has this same issue and our associates that have personal trucks driving to work checked theirs and they also have the same issue. From 1999 thru 2008 years. When contacting our local Chevy dealer, they advised they had never seen or heard of any issues like this. I find that hard to believe. Every person I mention this to, checks their truck and has the same issues with the broken bolts. There is definitely a problem with the exhaust manifold contracting and expanding too much- cheap steel attached to aluminum heads appear on all of the V-8 truck engines. Please look into this as a safety issue with heat and carbon monoxide as well as the costs to repair.

- West Lebanon, IN, USA

The contact owns a 2002 Chevrolet Silverado Z71. The contact was driving 15 mph when the engine back fired and stalled. The contact stated that an abnormal knocking was heard during the failure. The vehicle was taken to a private mechanic where the mechanic confirmed there was carbon build-up around the pistons and advised that the engine needed to be replaced. The manufacturer was contacted but the vehicle was not repaired. The failure mileage was 60,000 and the current mileage was 70,000.

- Burbank, CA, USA

The contact owns a 2002 Chevrolet Silverado 1500 hd. The contact was driving approximately between 45-50 mph on normal road conditions. The engine stalled without warning. The vehicle restarted after waiting 10-15 minutes. The vehicle resumed normal operation. There was a separate occasion the vehicle experienced the identical failure. The vehicle has not been inspected for the malfunction at this time. The failure mileage was 131,500. Updated 04/20/2010. Updated 09/21/10

- Cross, SC, USA

The contact owns a 2002 Chevrolet Silverado 1500. The contact experienced several issues with his vehicle and took it to an independent mechanic for repair. When he took the receipt for the repair to the dealer, they refused to speak with him. The dealer claimed to have called the manufacturer and was informed that they were not responsible for the repair charges because the vehicle was serviced by an independent mechanic. The rear end seal, transmission collar, intake gasket, theupdated 04-20-09 head gasket on the engine, and the catalytic converter were all replaced. The failure mileage was 98,000.

- Defiance, OH, USA

1. found needle bearings in oil during routine oil change. 2. was told rocker arms were failing, vehicle had about 75,000 miles on it. 3. replaced all rocker arms, cleaned out heads, removed engine oil pan cleaned and removed all material.

- Plymouth, OH, USA

: the contact stated an oil puddle was noticed under the vehicle while parked in the driveway on 3 occasions. The dealer was contacted and replaced the oil pan gasket. The 2nd time an oil puddle was found, the vehicle was taken to the dealer who found an oil leak in the crankcase sensor. The dealer replaced the oil pan gasket & installed oil pressure unit on 09/23/04. On 09/05/06, the vehicle was taken in for a recall, and the dealer determined that the oil pan gasket needed to be replaced a third time.

- Bremen, OH, USA

2002 Chevrolet Silverado with noisy engine getting worse the dealer tells me this is normal. This is not normal GM denies they need to fix the problem

- Gorham, NH, USA

Vehicle seized while driving 55 mph. Vehicle was restarted, and was driven to consumer's home. Dealer had not been contacted.

- Woodville, MS, USA

A recall (04V357000) was issued for the cam shaft position sensor. The consumer was unable to find an authorized dealer to repair the vehicle. Please provide additional information.

- West Winfield, NY, USA

Vehicle stalled while driving at 55 mph. The consumer was told that the distributor cap and rotor needed to be replaced. The problem continued, then the consumer was told again that the distributor cap and rotor needed to be replaced again. The dealer found that the A/C line was routed directly above the distributor cap to retain moisture and misfire.

- Kokomo, IN, USA

Piston slap.

- Peabody, MA, USA

Many of the problems took several times in the shop to fix. The castrophic failures in the engine & transmission have never been fixed. The truck has lunging, dead spots & surges & the transmission clunks (shifts hard, jerky) the auto may or may not accelerate on demand & will later accelerate when you need to apply the brakes.

- Ridgecrest, CA, USA

Upon a cold start, engine would make noise. Possible problems with engine.

- Riverside, NJ, USA

While driving the check engine light appears on the dashboard and remains lit. The driver drove the vehicle to the dealer for inspection. The mechanic replaced the solenoid seal but the problem still exist.

- Ethelsville, AL, USA

Consumer started the vehicle early in the morning and heard a noise. The noise sound like a diesel engine. After vehicle is warmed up, there was no noise. Dealer stated that this type of noise was common to any vehicle being started early in the morning.

- Newtown, CT, USA

Air conditioner (A/C) line runs over the top of the distributor, causing condensation in the distributor. When this occurs, it results in engine misfiring and vehicle stalling. At 22,000 miles transmission went out.

- Mobile, AL, USA

Consumer started vehicle early in the morning and heard a loud noise. After five minutes, vehicle warmed up, and there was no noise. Dealer stated that this type of noise was common to any vehicle being started early in the morning.

- Athens, AL, USA