You can not lower the spare tire, under the vehicle, this is a big problem and I am not the only person with this problem, the part that holds the spare tire has a spring loaded lock on it that cannot release because of a bad design off it, their is a video on youtube about it (good information about it) you need to cut the tire down with a cutting torch, this is a bad idea around a gas tank, I can not express how mad I am right now because I can't even think of that many cuss words, and it is going into heart a tack mode, I would love to meet the engineer that designed this, and have him change the tire, first you need a tow truck then a shop with a lift then two mechanics if not three and you then need a transmission jack to put upward pressure on the tire to release the tension of the locking device that holds the tire, after you let the air out of the tire, I can overhaul the engine and the transmission and anything else that need to be done to this or any other car, but this is a big big mistake in design, can you imagine a lady having to change a tire on the side of the road!!! if a mechanic (male or female) cant do it, how can the average consumer, do it? and why hasn't this been a recall, I know why it hasn't because people are forced to pay for it and forget it, well I bought the vehicle without looking for this problem because my wife and daughters and sons have all been properly trained on how to handle this problem, but it can't be done on this vehicle or any other Chevy vehicle of this make from what I understand, you can not do this safely, no I don't have a flat tire either I was just explaining to the wife that it may be a little different so I wanted her to see it just incase she had a problem and she would be prepared on how to handle it (wrong) it should take ten or fifteen minutes to do, can't be done, and I can't believe it please contact me.

- Deming, NM, USA

Popping noise from under hood, mainly when turning left (has now started when turning right). Almost sounds like the wheels are going to fall off. It can also be felt in the steering wheel. Feels very unstable, like front-end could fall apart at any minute. GM is aware of this problem and has been since 2001 (NHTSA item #10009991, #10010873, #10000950, #10004991, #1004239, #10005172, #10004723, and finally their "fix" #10025148). However, they act as though they have never heard of this problem. I have researched this online (edmunds.com, yahoo...just search for I-shaft assembly) and this is a wide-spread problem on numerous GM/Chevy/Cadillac vehicles and GM should be forced to remedy this situation. This situation is as-much, if not worse than the electrical system/dashboard panel problems, that GM has recalled. Please, help the masses who have been sold this defect. Before someone is seriously hurt.

- Moore, OK, USA

The consumer was informed the passenger air bag sensor wouldn't activate the air bags for 80 pounds or less, but it did when their 62 pound child was in the seat. Other problem are as followed: Driver's door experienced intermittent rattles, steering vibrations/grinding when turned to left, sunroof leaked heavily when it rained or when going through the car wash, dash lights were inoperative, headlights were inoperative, vehicle did not shift when in 4 wheel drive, window molding was loose, stereo lights flickered, seat memory in the driver's seat would not move to preset memory positions and would not move forward when the ignition key was removed, and the front power window along with the rear passenger window were inoperative.

- West Linn, OR, USA

4 wheel drive light came on and would not engage. The dealer told the consumer it was a software problem. The consumer thought the problem was resolved until a couple of weeks later when he attempted to place the vehicle in reverse and it did not engage. After trying a second time if engaged and the 4-wheel drive light illuminated again and the vehicle failed to go into 4-wheel drive. The consumer was finally told that the manufacturer did not have a fix for the malfunction of the 4-wheel drive. The vehicle had other problems such as a rattling noise coming from the glove compartment, the remote keyless entry was inoperative, there was a thumping sound coming from the drivers side when the consumer made a turn, the emblem fell off the back of the truck, the seat mechanism did not work and there was in the drivers side running board.

- Silverado, CA, USA