2006 GMC Sierra 1500 Electrical system Problems
- Complaints
- 20about this part
- Share
- 14%of 145 total for the year
- Median mileage
- 86,000miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 20 complaints about the electrical system of the 2006 GMC Sierra 1500, 14% of the 145 complaints for this model year. Where a mileage was given, the median is 86,000 miles. 2 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My truck exhibited the same issues as #10240: special coverage adjustment-heating, ventilation, and air conditioning blower not fully functional or inoperative - (may 9, 2011). However my auto climate fan was not covered. I believe this is a recall issue. My truck became smoky from the overheating wires and the HVAC system would run after cutting off the ignition.”
NHTSA complaint #10788432, filed 2015-11, 152,815 miles“2006 Gmc sierra quit running on a trip we were taking. It started missing and eventually wouldn't restart. The truck has 82k on it and is very well maintained. The engine would turn over but not start... No spark? It has been to various service mechanics as well as my attempt to figure out what is wrong with it. Many new parts have been used: icm, crank sensor, cam sensor, coil... No difference. This vehicle quitting on a very busy highway could have caused significant injury to myself and/or my passenger. …”
NHTSA complaint #10781116, filed 2015-10, 82,000 miles“Reduced engine power and engine light. Have had just about everything replaced I have my repair bills. Truck will run fine after being in shop then starts all over again. Throttle body has been replaced twice. It will drop me down to 20mph on the highway and I am afraid it is going to cause a bad wreck. It happened to me today and I am out of town I have drove 600 miles with a horse trailer to pick up a rescue horse and am afraid to start home with no clue what is wrong with this truck when I reset the battery it will work fine but I am telling you that it is going to cause a bad wreck. …”
NHTSA complaint #10904575, filed 2016-09, 138,000 miles“My fan high speed burst out and I had a strong else trial burning smell. I had my truck looked at to find that my wiring harness and resistor had burnt. I had them replaced this last september. Since then I have had to replace two more resistors and one more wiring harness. I talked to two dealerships and no one told me about the, special warranty adjustment . I had to research the internet to find this out. When I took my truck back to the original dealer, they blamed me for not knowing the language. I am glad I did not burn my truck up like several other had (found on the internet). …”
NHTSA complaint #10679831, filed 2015-01, 110,000 miles“The blower motor resistor overheated and melted the wiring harness,almost caused a fire,burnt my fingers trying to stop it from starting to burn,my 7 year old was with me.”
NHTSA complaint #10349804, filed 2010-08, 60,000 milesRelated service bulletins
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Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 20 | 14% |
| 2025 | 26 | 21% |
| 2024 | 43 | 11% |
| 2023 | 64 | 13% |
| 2022 | 83 | 14% |
| 2021 | 76 | 13% |
| 2020 | 81 | 17% |
| 2019 | 95 | 14% |
| 2018 | 43 | 14% |
| 2017 | 54 | 15% |
| 2016 | 54 | 16% |
| 2015 | 96 | 13% |
| 2014 | 129 | 17% |
| 2013 | 6 | 5% |
| 2012 | 8 | 7% |
| 2011 | 17 | 6% |
| 2010 | 10 | 6% |
| 2009 | 20 | 9% |
| 2008 | 31 | 8% |
| 2007 | 22 | 8% |
| 2006 | 20 | 14% |
| 2005 | 67 | 38% |
| 2004 | 81 | 38% |
| 2003 | 43 | 24% |
| 2002 | 3 | 2% |
| 2001 | 7 | 5% |
| 2000 | 5 | 3% |
| 1999 | 8 | 5% |
| 1998 | 3 | 5% |
| 1997 | 2 | 2% |
| 1996 | 1 | 20% |
Other parts of the 2006 GMC Sierra 1500
67 complaintsTransmission and drivetrain
13 complaintsSuspension
11 complaintsAir bags
9 complaintsBody and structure
9 complaintsFuel system
8 complaintsTires
7 complaintsSteering
6 complaintsWheels
6 complaintsEngine
5 complaintsExterior lighting
5 complaintsEngine cooling
3 complaints
← All problems reported for the 2006 GMC Sierra 1500
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