2006 GMC Sierra 2500 Electrical system Problems
- Complaints
- 4about this part
- Share
- 6%of 66 total for the year
- Median mileage
- 52,900miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 2006 GMC Sierra 2500, 6% of the 66 complaints for this model year. Where a mileage was given, the median is 52,900 miles. 2 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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. …”
NHTSA complaint #10336606, filed 2010-06, 83,000 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.”
NHTSA complaint #10632958, filed 2014-09“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. …”
NHTSA complaint #10462485, filed 2012-06“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. …”
NHTSA complaint #10266628, filed 2009-04, 22,800 milesRelated service bulletins
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Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 5 | 38% |
| 2025 | 1 | 4% |
| 2024 | 33 | 31% |
| 2023 | 6 | 18% |
| 2022 | 12 | 27% |
| 2021 | 6 | 12% |
| 2020 | 13 | 16% |
| 2019 | 9 | 28% |
| 2018 | 7 | 20% |
| 2017 | 6 | 16% |
| 2016 | 9 | 15% |
| 2015 | 11 | 12% |
| 2014 | 4 | 13% |
| 2013 | 3 | 7% |
| 2012 | 4 | 13% |
| 2011 | 9 | 14% |
| 2009 | 7 | 23% |
| 2008 | 3 | 5% |
| 2007 | 5 | 6% |
| 2006 | 4 | 6% |
| 2005 | 42 | 37% |
| 2004 | 48 | 34% |
| 2003 | 36 | 23% |
| 2002 | 1 | 1% |
| 2001 | 4 | 3% |
| 2000 | 3 | 6% |
| 1999 | 2 | 6% |
| 1998 | 1 | 7% |
Other parts of the 2006 GMC Sierra 2500
30 complaintsTransmission and drivetrain
12 complaintsSteering
10 complaintsTires
6 complaintsEngine cooling
5 complaintsAir bags
3 complaintsFuel system
2 complaintsSuspension
2 complaintsLatches, locks and linkages
1 complaintsBody and structure
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaintsWheels
1 complaints
← All problems reported for the 2006 GMC Sierra 2500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology