2008 GMC Sierra Electrical system Problems
- Complaints
- 15about this part
- Share
- 22%of 68 total for the year
- Median mileage
- 67,435miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 15 complaints about the electrical system of the 2008 GMC Sierra, 22% of the 68 complaints for this model year. Where a mileage was given, the median is 67,435 miles. 2 recall campaigns on record are filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My 2008 Gmc Sierra denali's automatic locks have failed on three of the four doors. I didn't realize they were not engaging until I took two children to dinner and had one of them open the door without unlocking the door. I had the child safety locks engaged and thought I would be safe, but it turns out the locks never engaged (thus, making the child locks irrelevant). This is an issue beyond inconvenience.”
NHTSA complaint #10439683, filed 2011-12, 120,000 miles“On the morning of april 11 we had a severe thunderstorm at approx. 3:00am. Later in the morning at approximately 6:30am I found my 2008 Sierra truck running in my garage with the garage doors shut. The headlights were flashing and the garage was extremely hot due to the engine running. There was a lot of water condensation on the floor indicating that the engine had been running for quite some time. The temperature gauge was at running temperature. …”
NHTSA complaint #10508300, filed 2013-04, 71,500 miles“We have had three of the power locks go out - first was front passenger, which was under warranty and covered free of charge, so was the second - the front drivers side. But, the rear passenger side went out a year later and now they will not cover it under warranty. My concern is that, having small children, I have had them locked inside the vehicle and the unlock doesn't work, so I have to climb through to access the door lock. In an event of an emergency, where time is of essence - this is a severe issue.”
NHTSA complaint #10561020, filed 2014-01, 32,000 miles“While driving pulling a boat trailer truck lost all power doors started locking and unlocking continually,all gauges and warning lights come on truck lost power and cuts off loosing breaking and steering, radio resets , speakers not working. Service traction control warning comes up service stabilatrac comes up , service battery/charging system.”
NHTSA complaint #10469438, filed 2012-08, 63,370 miles“Erratic door lock behavior. Passenger and rear driver side door will not lock or unlock consistently. The passenger side lock not locking resulted in the theft of a handgun from my vehicle. This deficiency leaves the vehicle susceptible to theft, carjacking, doors coming open on impact. Passengers, especially children are at risk of opening the vehicle door while in motion. In the event of an emergency the doors effected can not be unlocked from other than the manual latch button to aid passengers.”
NHTSA complaint #10554192, filed 2013-11, 35,000 milesRelated recalls
- 10V240000Jun 4, 2010Gm is recalling certain model year 2006-2009 buick, lucerne; cadillac dts; hummer h2; model year 2008-2009 buick enclave; cadillac cts; model year 2007-2009…Covers: GMC Sierra 2007–2009, Buick Lucerne 2006–2009, Cadillac DTS 2006–2009 +15 more
- 08V441000Aug 28, 2008Gm is recalling 857,735 my 2006-2008 buick lucerne; cadillac dts; hummer h2; my 2007-2008 cadillac escalade, escalade esv, escalade ext; chevrolet avalanche…Covers: GMC Sierra 2007–2008, Buick Lucerne 2006–2008, Cadillac DTS 2006–2008 +13 more
Related service bulletins
- 10059078Aug 1, 2015Cadillac/chevrolet/gmc: on some vehicles and/or trucks, instrument cluster will illuminate, after an oil change, indicating low oil pressure and/or ses lamp will illuminate…
- 10113703Jun 23, 2015This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL)…
- 10028831Jun 1, 2015General motors: intermittent mil/ses/ dtc p2138 with reduced engine power (repair instrument panel (ip) to body harness connector). 2005-08 gm passengers cars/light duty trucks…
- 10114470Apr 17, 2015This Preliminary Information communication provides information to the technician about vehicle that may have an OnStar system that has progression tones when pressing the blue…
- 10113519Feb 5, 2015This preliminary informational bulletin adds the 2015 model year to repair information on correcting a customer concern of poor, limited, reduced Remote Keyless Entry (RKE) or…
- 10032328Nov 1, 2014Gmc chevrolet service campaign: see document search button for owner letter. Material over sensing & diagnostic module retaining moisture. Vehicles may have a condition where an…
- 10112093May 29, 2014This Preliminary Information communication provides information to the technician about vehicles with a "Service Charging System" message displayed on the Driver Information…
- 10112033Jan 28, 2014This Preliminary Information communication provides information to the technician about vehicles that have navigation or radio screen is blank or flashes on and off, no sound…
- 10112009Jan 21, 2014This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the…
- 10112368Nov 25, 2013This Preliminary Information communication provides information to the technician about vehicles that have an instrument panel backlighting flashes, flickers or inoperative…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2017 | 6 | 10% |
| 2016 | 2 | 33% |
| 2015 | 1 | 2% |
| 2014 | 9 | 9% |
| 2013 | 5 | 13% |
| 2012 | 7 | 24% |
| 2011 | 3 | 7% |
| 2010 | 4 | 12% |
| 2009 | 9 | 24% |
| 2008 | 15 | 22% |
| 2007 | 7 | 12% |
| 2006 | 7 | 13% |
| 2005 | 23 | 20% |
| 2004 | 39 | 21% |
| 2003 | 31 | 15% |
| 2002 | 6 | 2% |
| 2001 | 13 | 5% |
| 2000 | 12 | 3% |
| 1999 | 12 | 2% |
| 1998 | 9 | 5% |
| 1997 | 12 | 5% |
| 1996 | 5 | 2% |
| 1995 | 4 | 2% |
| 1994 | 4 | 2% |
| 1993 | 5 | 7% |
| 1992 | 1 | 3% |
| 1990 | 1 | 6% |
| 1989 | 2 | 13% |
Other parts of the 2008 GMC Sierra
29 complaintsBody and structure
12 complaintsLatches, locks and linkages
11 complaintsOther or unknown
3 complaintsBrakes
2 complaintsElectronic stability control
2 complaintsFuel system
2 complaintsSteering
2 complaintsTransmission and drivetrain
2 complaintsEngine
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2008 GMC Sierra
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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