2015 GMC Sierra 2500 problems & reliability
89 owner complaints filed with NHTSA for the 2015 GMC Sierra 2500, alongside 6 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (2 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Exterior Lighting | 26 | 29% |
| Electrical System | 11 | 12% |
| Fuel/propulsion System | 10 | 11% |
| Power Train | 8 | 9% |
| Unknown OR Other | 8 | 9% |
| Engine | 7 | 8% |
| Service Brakes | 5 | 6% |
| Steering | 4 | 4% |
| Air Bags | 3 | 3% |
| Seat Belts | 3 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 46,084 miles (middle 50% between 13,900 and 103,520 miles), based on 51 complaints that included mileage.
Complaints by incident year
What owners report
“After starting the vehicle, I turned on the rear defrost button and within a few minutes the rear window started producing smoke inside the vehicle. I turned the truck off immediately and then approximately 30 seconds later, the rear window on the passenger side shattered. There is a recall that was issued for this…”
Unknown OR Other · filed Mar 17, 2026
“The contact owns a 2015 GMC Sierra 2500. The contact stated that while the vehicle was parked, the defroster was activated, and there was smoke inside the vehicle before the rear glass shattered. No warning light was illuminated. The dealer was notified of the failure and informed the contact that the VIN was not…”
Visibility · filed Mar 6, 2026
“Odometer Fraud. The contact purchased a 2015 GMC Sierra 2500. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 189,458 and the contact stated he discovered on Carfax…”
Electrical System · filed Jan 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Desiccated Air Bag Inflator Rupture
Engineering Analysis EA21002 · opened Sep 17, 2021 · open
Technical service bulletins
2,215 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2015 GMC Sierra 2500. The 10 most recent:
PI to help diagnose A/C concern
PIT5099J · Service Bulletin/Repair Instructions · issued Jul 21, 2026
This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
PIT5509N · Service Bulletin/Repair Instructions · issued Jul 21, 2026
This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
PIT5509M · Service Bulletin/Repair Instructions · issued May 14, 2026
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
PIT3271Q · Service Bulletin/Repair Instructions · issued Apr 1, 2026
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
PIP6104 · Service Bulletin/Repair Instructions · issued Mar 9, 2026
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIP4902V · Service Bulletin/Repair Instructions · issued Mar 9, 2026
This 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 pressures. Tire pressures being set to the "Tire…
PIT4506J · Service Bulletin/Repair Instructions · issued Feb 16, 2026
This preliminary information communicates an issue with aftermarket LED headlights causing IPC warning messages and MIL along with several low speed lan DTCs.
PIT6483 · Service Bulletin/Repair Instructions · issued Feb 5, 2026
This 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 getting product from current supplier…
PIT6400A · Service Bulletin/Repair Instructions · issued Jan 16, 2026
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
PIP4902U · Service Bulletin/Repair Instructions · issued Jan 8, 2026
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2015 GMC Sierra 2500 has 6 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2015 GMC Sierra 2500?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 46,084 miles — budget accordingly if the car is approaching that mileage.