2015 GMC Denali
Only 18 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 18 complaints on file — too few for a fair verdict. The data below is complete but unranked.
- Complaints
- 18
- Recalls
- 0
- Investigations
- 0
- Top problem
- —
Too few to rank
None on file
None on file
Not enough data
Complaints per year
2015: 18 complaints
View as data table
| Year | Complaints |
|---|---|
| 1999 | 14 |
| 2000 | 21 |
| 2001 | 22 |
| 2002 | 23 |
| 2003 | 32 |
| 2007 | 3 |
| 2008 | 4 |
| 2009 | 2 |
| 2010 | 5 |
| 2011 | 11 |
| 2012 | 6 |
| 2013 | 5 |
| 2014 | 5 |
| 2015 | 18 |
Known problem areas
Only 18 complaints on file for this model year — too few to rank by share. Raw counts only, below.
Exterior lighting
6 of 18 total reports mention: exterior lighting.
Show complaint excerpts
Right brake light is out
NHTSA ODI report, 2018-07-10
Rear taillights have moisture in them. The moisture is constant in one and intermittent in the other. Both have been replaced once by dealer 3 months ago. Problem still…
NHTSA ODI report, 2017-04-15
Power train
5 of 18 total reports mention: power train.
Show complaint excerpts
Letter from senator feinstein inquiry on behalf of constituent in regards to having problems with GMC Sierra Denali pickup 2015. *ld the consumer stated the vehicle has had multiple issues with the suspension, transmission, and electronics.
NHTSA ODI report, 2017-08-09
Also filed under Suspension
Electrical system
4 of 18 total reports mention: electrical system.
Show complaint excerpts
Both LED brake lights have failed. If you tap them they wok for a minute but when driving they go out again. The seat vibrates to alert you of obstacles but the motor in the seat only work periodically. The rear window wiper has failed.
NHTSA ODI report, 2018-07-29
Steering
2 of 18 total reports mention: steering.
Service brakes
2 of 18 total reports mention: service brakes.
Show complaint excerpts
Tl* the contact owned a 2015 GMC Denali. The contact stated that while their husband was driving approximately 45 MPH, when the traffic came to a sudden stop causing the contact to apply the brakes to the vehicle.
NHTSA ODI report, 2020-10-19
Safety timeline
No recalls on file for this model year.
0 recalls · 0 investigations · oldest first
To check one car, enter its VIN on the NHTSA recall page. Check a VIN →
Buy-smart checklist
2015 GMC Denali — pre-purchase inspection
Inspect
- Exterior lighting: 6 reports on file for this year.
- Power train: 5 reports on file for this year.
- Electrical system: 4 reports on file for this year.
FAQ
- Is the 2015 GMC Denali reliable?
- There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
- What are the most common problems with the 2015 GMC Denali?
- The most-reported component is exterior lighting, accounting for 33% of complaints on file.
- How many recalls does the 2015 GMC Denali have?
- No recalls are on file for this model year.
Data updated 2026-11-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.