2015 GMC Sierra Denali Problems, Complaints & Recalls
- Compared with other Sierra Denali years
- Far more complaints than other years 4th of 18 for complaints
- Safety recalls
- None on file
- NHTSA crash rating
- Not rated
Owners have filed 22 complaints with NHTSA about the 2015 GMC Sierra Denali. That ranks 4th out of 18 Sierra Denali model years for complaints. The most reported problem area is service brakes (7 complaints, 32%), typically at around 49,000 miles. Complaints mention 1 crash. There are no safety recalls on file for this model year. NHTSA has opened 1 defect investigation involving it.
- 22owner complaints
- 0safety recalls
- 1NHTSA investigations
- 1complaints mentioning a crash
Complaints are unverified owner reports and are not adjusted for sales volume.
Most common 2015 GMC Sierra Denali problems
Complaints grouped by the part of the car owners reported, with the median mileage when the problem happened.
| Problem area | Complaints | Share | Median miles | Owners mention most | Typical repair cost |
|---|---|---|---|---|---|
| Service Brakes | 7 | 32% | 49,000 | — | — |
| Power Train | 5 | 23% | 51,400 | — | — |
| Electrical System | 3 | 14% | 22,567 | — | — |
| Unknown or Other | 2 | 9% | 54,500 | — | — |
| Air Bags | 1 | 5% | — | — | — |
| Engine | 1 | 5% | 46,000 | — | — |
| Engine and Engine Cooling | 1 | 5% | — | — | — |
| Fuel System, Diesel | 1 | 5% | 160,000 | — | — |
| Seats | 1 | 5% | 22,567 | — | — |
| Steering | 1 | 5% | 39,900 | — | — |
| Structure | 1 | 5% | 15,000 | — | — |
One complaint can list several problem areas, so shares can add up to more than 100%.
Complaints by year received
2015 GMC Sierra Denali recalls (0)
No safety recalls are on file for the 2015 GMC Sierra Denali.
To see whether a specific car still has an open recall, enter its VIN on NHTSA's official recall lookup. You can also decode a VIN here.
NHTSA defect investigations
- Desiccated Air Bag Inflator Rupture (EA21002) — opened Sep 17, 2021, still open.
Recent owner reports
Short excerpts of the latest complaints filed with NHTSA, with personal details removed. Full reports can be searched on NHTSA.gov.
The contact owns a 2015 GMC Sierra 2500 Denali. The contact stated that while driving at 65 MPH, the vehicle lost motive power with the âEngine Power Failureâ warning light illuminated. The vehicle was towed to the residence. The vehicle was later towed to an independent mechanic, where it was…
See attached document for complaint.
The contact owns a 2015 GMC Sierra 1500 Denali. The contact stated that while shifting the vehicle from park(P) to drive(D), the vehicle hesitated and then jerked into gear. The contact stated that the entire vehicle was shaking when it jerked into gear. The contact stated that the failure was also…
4 months ago the display portrayed a message stating, trailer brake warning, have system checked. Since that time i have attempted on numerous to have my vehicle checked. But as of this date i have not been to have any dealership look at my vehicle. I have been told by dealership that the vehicle…
Ac blows hot air qont gold freon for longer then week and half and is back to hot air..lead to believe its the ac condenser has failed
Other GMC Sierra Denali years
← 2014 Sierra Denali · 2016 Sierra Denali →
See all GMC Sierra Denali problems by year, every GMC model, or the GMC VIN decoder.
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Frequently asked questions
What are the most common problems with the 2015 GMC Sierra Denali?
Owners most often report service brakes, power train, electrical system problems. The top one, service brakes, accounts for 7 complaints.
Was there a recall on the 2015 GMC Sierra Denali?
No safety recalls are on file for this model year.
Was the 2015 GMC Sierra Denali a good year?
Complaint data can't fully answer that, because counts aren't adjusted for sales. Compared with other Sierra Denali model years, the 2015 has far more complaints than most years. Always get a pre-purchase inspection and check the VIN for open recalls.