definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
29,938 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2006 GMC Sierra 2500 engine problems

engine problem

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2006 GMC Sierra 2500 Owner Comments

problem #4

Mar 022009

Sierra 2500 8-cyl

  • miles


I have a 2006 GMC Sierra 2500 hd with 32000 miles. I have had to replace the brakes and rotors twice because they have rusted and rotted away. I have had to replace my exhaust because of rust and the entire under carriage and frame are heavily rusted. I have just recently noticed that there is even rust inside the cab, interior doors, chrome is bubbling.

- Middletown, OH, USA

problem #3

Jul 072011

Sierra 2500

  • 22,000 miles
The contact owns a 2006 GMC Sierra 2500 hd. The contact was driving approximately 50 mph and smelled burning coolant and the temperature gauge began to rapidly increase. The contact inspected under the hood and noticed the engine overheating with complete loss of coolant. Immediately, water was dispensed into the radiator reservoir. The vehicle was taken to an authorized dealer two different times for the same failure. The water pump was replaced twice. The manufacturer was notified and a complaint was filed. The approximate failure mileage was 22,000.

- Pinton Falls , NJ, USA

problem #2

Feb 132010

Sierra 2500 Diesel

  • 74,950 miles
Truck was parked in garage on a Friday night, with no problems. Started truck Saturday am to back out of the garage to hook up a trailer. I put the truck in reverse, then discovered it wouldn't steer and it wouldn't stop. Nearly took out the side of the garage door with the mirror, not to mention, nearly running over one of my kids! I had to engage the emergency brake in order to get the vehicle to stop - half in and half out of the garage. I shut the truck off and restarted it, but nothing changed. Called a flatbed truck to take the truck to the dealership. Power steering pump had failed and they replaced it. I'm very lucky that I wasn't pulling the trailer when this happened, as I could have been killed, or killed someone else. Very scary situation. There had been no trouble with the brakes or steering leading up to this incident - it was just boom - it happened. I purchased this diesel truck new, and have had the dealership do all scheduled maintenance. It has never been involved in any accident, and it is kept inside a garage when not in use.

- Ada, MI, USA

problem #1

Nov 302007

Sierra 2500 8-cyl

  • 22,800 miles
The contact owns a 2006 GMC Sierra 2500. The fly wheel, which runs with the transmission and helps change gears has had to be replaced three times within two years. While driving approximately 10 mph during the first failure, there was a loud clicking noise and it became louder over time. The dealer stated the vehicle was operating normally. A few weeks later, the noise was much louder; however, a different dealer 2 hours away diagnosed the vehicle and stated that the fly wheel failed. After being repaired 24,000 miles and a year later, the failure recurred. The fly wheel was replaced again and lasted 5 months before it failed. The power steering shaft also needed to be replaced due to it being worn out and failed again nine months later. The failure mileage was 22,800 and the current mileage was 55,000. Updated 06/08/09 the power steering gear was leaking due to leaking gear assembly, the HVAC blower was inoperative, the flywheel was cracked. The dealer replaced the stripped and broken exhaust studs. Updated 06/18/09.

- Homosassa, FL, USA

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