I have a 2003 Z71 Suburban. The speedometer broke today all of a sudden, said I was driving 60mph when I was barely doing 25. When I shut the car off it remained at 30mph. I called the Chevy dealer and they knew right away what the problem was and how much to fix it. $600. Now I know why, after reading the complaints on here. Everybody has the same problem. My truck has 91,000 miles on it. Why won't GM repair this regardless of how many miles the vehicles have on it. A defect is a defect, regardless of what the mileage is when it occurs! let's see, food in my kids mouth and a roof over their heads, or $600 to repair my defective truck. No wonder why GM is going under. I know I will never buy another GM vehicle. You people should do something. I see there a tons of complaints for the same thing. This obviously is a safety issue.

- Orlando, FL, USA

Revving of engine to point of screeching tires. Sometimes feeling of being in neutral for a second then clunk in tranny/rear end? acts as engagement of cruise control increasing speed, not able to disengage by hitting brake. Computer did not show anything. Next time putter "locked out" tech's. puter replaced. Worked good for two weeks. Engine revved, hit patch of ice, totaled out Z-71. Thank god, no injuries. Fighting it for appx 16000 miles. 72000 to 88000.

- Battle Creek, MI, USA

The issue started with the drivers memory seat not remembering the seat position and the easy exit pushed the seat forward in to the steering wheel instead of back. Then came the issue with the speedometer. I received the letter identifying this problem however like so many other people my vehicle has more than 70,000 miles and although it has been identified as a problem GM will not consider it a recall and I would have to pay to have it fixed. This is obviously a wide spread problem that GM should fix free of charge no matter the mileage. My husband also has the same issue with his 2005 3/4 ton Silverado.

- Lyman, ME, USA

The contact owns a 2003 Chevrolet Suburban. The same day the vehicle was purchased, the contact attempted to apply the parking brake and the vehicle rolled forward. The vehicle has been to the repair shop three times and each time the mechanic stated that everything was fine. The emergency brake has not worked since the vehicle was purchased. The current mileage was 62,000 and failure mileage was 1. the consumer stated the sunroof leaked, a blown fuse was replaced. The temperature gauge in the rear view mirror was inoperative, the dealer tightened the connection, there was a rattle coming from thee left side of the vehicle when going over bumps in the road. Updated 10/24/07.

- French Village, MO, USA

The 2003 Chevy Suburban has an intermittent, recurring issue with the cluster that causes it to short out. There are many examples of this problem from other customers listed on the internet. In my personal experience, this problem results in electronic failures that present themselves in these ways: 1) the speedometer either fails to operate or displays the max speed. 2) when turning off the vehicle, the radio will automatically turn on and begin playing as your exiting the vehicle 3) when placing the key in the ignition, the automatic seat will begin moving by itself, does not remember the previous settings and will force you into the steering wheel. I could not stop the seat from jamming me into the steering wheel. When I contacted the dealership, they knew exactly what the problem was without even looking at the car. The reason they know about it is because they have replaced so many of them already. When I contacted GM, all they would do is offer me a one time service of $200 which would not apply to fixing the faulty cluster.

- Montgomery, AL, USA

Speedometer has failed. Shows 120 mph, even when shut down. It slowly began to go from zero at startup, to 35 at startup, to 70 at startup and now to 120. Apparently, there is a known defect in the instrument cluster which Chevy and dealers are aware of.

- Prattville, AL, USA

: the contact stated the vehicle had keyless entry and the power supply failed, which resulted in no way to get in or out of the vehicle. The contact expressed concern that if someone was to be inside the vehicle when the power supply failed, they would not be able to exit the vehicle and could cause a life threatening concern.

- Rockville, MD, USA

: the contact stated the vehicle looses power intermittently. The first time this occurred, the dealership determined a rodent had chewed through the wires. The wires were replaced. The second time this occurred, the dealership determined a clip was loose. The third time, the battery had just been charged and after driving for 40 minutes the vehicle lost all power. The vehicle would not restart, so it was jumped. The vehicle lost power again and would only travel at 10-15 mph. The vehicle was towed to the dealership. The dealership checked the battery and alternator, but determined both components were in good condition. The dealership was unable to duplicate the problem and no codes were present.

- Camarillo, CA, USA

Speedometer gauge stopped working. Would register as going 20 mph or even up to 80 mph when parked. Occasionally would appear to track then would register significantly too high or too low (usually too high). Dropped off at dealer & told it needed instrument panel cluster replacement but was on back order nationwide. Called GM customer assistance who confirmed with the dealer that it is a "high failure item". initial attempt at replacing. Same as other complaints that I have read. I was also told that the replacement of this is expensive.

- Fredericksburg, VA, USA

Speedometer gauge stopped working. Would register as going 20 mph or even up to 80 mph when parked. Occasionally would appear to track then would register significantly too high or too low (usually too high). Dropped off at dealer & told it needed instrument panel cluster replacement but was on back order nationwide. Called GM customer assistance who confirmed with the dealer that it is a "high failure item". initial attempt at replacing ipc failed, still awaiting another new part & hoping to get vehicle back soon.

- Eagle, ID, USA

Vehicle is 2003 Chevrolet Suburban, purchases new. Speedometer won't read correctly; at first it would read 20-30 mph fast; then it finally only reads between 30-120 mph; had same problem with gas gauge; ran out of gas with tank showing almost half full, in an area with no cell phone reception. Very dangerous. Dangerous to not be able to determine your actual speed. GM refuses to cover this problem, even though dealer has had several instances of these failures. GM must be aware of problem, but refuses to acknowledge.

- Aurora, CO, USA

The consumer owns a 2003 Chevy Suburban. The consumer stated that she had the vehicle in the shop at least once a month since she purchased the vehicle November 12, 2003. The electrical system has been going bad, the feature record showed it was reprogramming it self, shutting her car off after she started it, unlocking the doors by itself. She almost hit someone because the vehicle accelerated by itself. She also states that the last time it was in the shop her rpms went up to 3000. The dealership said they couldn't duplicate the problem. The dealership has spoken to the GM specialist and they could not help either.

- Riverside, CA, USA

Consumer noticed a wire burning smell, and air bag indicator service light started flashing.

- Suttons Bay, MI, USA

Consumer stated that all four doors don't work properly. Radio is not working as well. While driving, all gauge warning lights continuously illuminates the dash board. Dealer replaced. Alternator, radio twice, door electrical system. The dash board including the gauges and still persist the problem intermittently.

- Elberton, GA, USA

While driving four wheel drive shift sticks, causing the vehicle not to accelerate properly. General Motors says this is an electrical problem, and is looking into the problem. Vehicle experiencing problems with four wheel drive shift sticking causing the vehicle not to accelerate properly. General Motors claims that this may be an electrical problem. General Motors has failed to follow up on remedy for problem.

- New City, NY, USA