2012 GMC Sierra 3500 Other or unknown Problems
- Complaints
- 2about this part
- Share
- 22%of 9 total for the year
- Median mileage
- 35,900miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the other or unknown of the 2012 GMC Sierra 3500, 22% of the 9 complaints for this model year. Where a mileage was given, the median is 35,900 miles.
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.
“The Gmc sierra 3500hd while in regeneration mode funnels exhaust directly into the cab through the vents. While GM recognized this as a flaw and came up with a fix for it, they will only repair it in a 5 year or 100,000 mile window. How is this not a safety issue without an expiration?”
NHTSA complaint #11032885, filed 2017-10, 35,900 miles“Our Dash board cracked very badly from the top next to the speaker to the passenger side air bag. We purposely use a dash board cover and never place heavy things on it. This is a safety issue as if getting in an accident wouldn’t be bad enough flying shrapnel would be worse. We just had it fixed at a dealership to the tune of $2500. This is not okay as I see this is a constant problem.”
NHTSA complaint #11709666, filed 2026-01Related service bulletins
- 11037253Sep 4, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11030974Apr 1, 2026This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030092Mar 9, 2026This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11028931Feb 16, 2026This Preliminary Information communication provides information to the technician that some owners of Heavy Duty Trucks and Utilities may ask if they can lower their tire…
- 11027698Jan 16, 2026This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with…
- 11027601Jan 8, 2026This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11025755Nov 20, 2025This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s…
- 11023091Sep 9, 2025New Vehicle Monitoring Programs Section in IVH
- 11022084Aug 14, 2025This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 2 | 12% |
| 2024 | 7 | 14% |
| 2023 | 3 | 11% |
| 2022 | 5 | 16% |
| 2021 | 3 | 15% |
| 2020 | 6 | 12% |
| 2019 | 2 | 15% |
| 2017 | 2 | 15% |
| 2015 | 3 | 10% |
| 2013 | 1 | 7% |
| 2012 | 2 | 22% |
| 2011 | 2 | 10% |
| 2008 | 1 | 4% |
| 2002 | 1 | 5% |
| 2000 | 1 | 4% |
Other parts of the 2012 GMC Sierra 3500
3 complaintsFuel system
3 complaintsTransmission and drivetrain
3 complaintsElectrical system
2 complaintsAir bags
1 complaintsBrakes
1 complaints
← All problems reported for the 2012 GMC Sierra 3500
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