2004 Chevrolet Colorado driveshaft and rear differential failed. Consumer states that the driveshaft fell out while backing out of his driveway and then the rear differential failed. He also stated that GM denied the claim. The consumer stated after the repairs were made, there was a loud noise coming from the vehicle when the gear was in reverse. The dealer stated the transmission failed as a result of the drivetrain failure.

- Liverpool, NY, USA

The rear end of my 2004 Chevrolet Colorado jammed while I was backing out of my driveway, causing the gears to shatter, the rear axle to crack, and the driveshaft to drop out of my truck. Since I bought the truck, I noticed vibrations and instability in the back of my truck, and sometimes the engine stays in 4WD when I shift out of it. The entire rear end of my truck has to be replaced, and GM is refusing to cover the repairs, even though the truck is under warranty. This was a very dangerous incident, and would have been worse if it had happened on the highway.

- Liverpool, NY, USA

The contact owns a 2004 Chevrolet Colorado. While driving and/or accelerating, the contact heard a clicking sound. He stated that the vehicle drove and stopped normally. The dealer was notified of the failure and they could not find anything wrong. There is no recall on the vehicle and it has not been repaired. The speed was unknown. The current mileage was 41,000 and failure mileage was 39,000. Updated 12/27/07 updated 12/12/07

- Dixon Mills, AL, USA

I have a 2004 Chevrolet Colorado 4WD extended cab truck that constantly vibrates at speeds of 30mph and 55-60mph. The truck shakes as if it is out of alignment or tires are unbalanced. I had the truck to the dealer a total of four times - twice for re-balancing the tires and once for a set of new tires. The dealership said that the tires were recalled because of cupping. But, the problem of vibrating or oscillating still exists. The dealership has been actually very helpful, but frustrated. I was told that this may be a defective driveshaft, which tells me this could be a dangerous situation.

- Beaver Springs, PA, USA

Immediately after purchasing a 2004 Chevy Colorado reg cab 5 cyl, I have experienced a noticeable vibration and rough ride. Dealership balanced my tires and tried temporarily swapping tires but the problem still exist. I also test drove another truck at the dealership that had the same vibration problem. It is very noticeable on rough pavement regardless of speed, and at speeds around 45-55 intermittently on the highway. Feels like the rear end is not balanced. Back end shimmy's from side to side sending vibrations thriugh the truck my dealership told me it is just the way the truck is designed and has been delaying fixing the problem now for two months. Others are also having problems with this truck, see the following forum to read their stories. It seems there might be a drive shaft design problem" www.automotiveforums.com/vbulletin/showthread.php"P=2159504.

- Lasalle, IL, USA