definitely annoying
Crashes / Fires:
0 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
26,450 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 electrical problems

electrical problem

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2006 GMC Sierra 2500 Owner Comments

problem #4

Sep 022014

Sierra 2500

  • miles


You can take the key out of the ignition with the motor running. To start engine you need to 'wiggle' the key or take it out and re-insert about 50% of the time. Please note; because of the past "we don't care" attitude of GM on other complaints- I personally don't want them to contact me- I'm just letting you know of this in case of others that have problems.

- Mt Juliet , TN, USA

problem #3

Jun 202012

Sierra 2500 4WD 8-cyl

  • miles
Was driving home from work. Smelled something hot, then smoke came out vents, within less than a minute flames were coming out from under passenger's side dash. Had to pull over and put out fire with fire extinguisher. If there had been a passenger like my children they would have been severely burned or killed.I am a GM technician and the fuse for the HVAC did not blow and taking away power did not stop the issue. I know that there are issues with the resistor wiring. My vehicle systems all worked fine before the incident and gave no indications of failing. This incident happened fast enough that the vehicle would have been totally in flames if a fire extinguisher was not right handy. You are aware of this issue why is nothing being done about it. GM is very lucky that I did not have a passenger tonight.

- Lisbon, NH, USA

problem #2

Jan 132010

Sierra 2500

  • 83,000 miles
2006 GMC Sierra hd 2500 - 4X4 crew cab slt - while parked in our driveway and with keys out of the ignition, the air bag deployed. We called the dealership ferguson Pontiac GMC and we were told that it was not possible and out of warranty. We had our mechanic tow it in. They hooked up the computer to see if a sensor had tripped the air bag and the rug started to smoke. They removed the melted mat to the rug and found the wiring harness was melted away. Bottom side of the rug was burnt. We went to GMC in person with pictures and asked how this could happened and were told "it can happen at anytime with sand and moisture around the wiring harness". we were told this could have also happened while driving the vehicle. We want this truck fixed and assured that it will not happen again. This could have caused a forest fire, a horrible accident, and or death. No one seems to care. We have several GMC vehicles and are concerned if the other ones will do the same. We are not satisfied with their complete disregard for our safety and did not want to even look at it. We have pictures if you would like us to email them to you. This is out of the normal realm of "warranty" and believe it is GM's responibility to fix this and make sure it doesn't happen again. Also the public needs to know that this "can happen at anytime". this was quoted from [xxx]the service manager at ferguson ponitac GMC. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Colorado Springs, CO, 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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