2015 GMC Sierra 1500 problems and complaints
Owners have filed 817 complaints with NHTSA about the 2015 GMC Sierra 1500. The most-reported areas: Service Brakes (243), Exterior Lighting (130), Power Train (115).
Key takeaways
- 817 owner complaints on file with NHTSA.
- 29 involve a crash, 10 a fire, 14 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Service Brakes | 243 | 30% |
| Exterior Lighting | 130 | 16% |
| Power Train | 115 | 14% |
| Electrical System | 104 | 13% |
| Steering | 91 | 11% |
| Engine | 88 | 11% |
| Unknown Or Other | 72 | 9% |
| Air Bags | 43 | 5% |
| Structure | 32 | 4% |
| Visibility/Wiper | 21 | 3% |
| Suspension | 19 | 2% |
| Seat Belts | 16 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2015 GMC Sierra 1500 PU/EC RWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2015 GMC Sierra 1500 PU/RC RWD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2015 GMC Sierra 1500 PU/RC 4WD | 5/5 | 5/5 | 5/5 | 4/5 |
| 2015 GMC Sierra 1500 PU/EC 4WD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Engine - filed 2026-09-25
In August, 2019, at 93,672 miles, GM covered a lifter failure on our 2015 GMC Sierra, V8 AFM engine. Only the left side was repaired. Now, in 2026 at 130,000, the right side has the same issue and needs repair. The estimate to repair is $16,697. This is a known issue and a safety concern.
Power Train - filed 2026-09-22
The transmission Started Shuddering, it would slip occasionally and slipped badly when i was driving in rush hour traffic in the middle of a left turn. had no power for several seconds then it finally reengaged. The shuddering got worse and worse to the point i took it to a transmission shop to look at it and they sai...
Steering,power Train,electrical System - filed 2026-09-10
Power steering seems to be lost for a second or two at low speeds turning. Happens multiple times a day.
Diagnose it yourself
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
More for the 2015 GMC Sierra 1500
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.