2018 GMC Sierra DenaliProblems, recalls & complaints
NHTSA has logged 17 owner complaints about the 2018 GMC Sierra Denali, most often about the engine. It has no vehicle safety recalls on record.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through April 2, 2026. Updated daily.
Where the 2018 GMC Sierra Denali has problems
17 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 5 | 0 |
| Structure | 4 | 0 |
| Service brakes | 4 | 1 |
| Steering | 3 | 1 |
| Exterior lighting | 3 | 0 |
| Electronic stability control (ESC) | 2 | 1 |
| Power train | 2 | 0 |
| Suspension | 1 | 0 |
| Wheels | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
2018 GMC Sierra Denali recalls and how many were fixed
No vehicle safety recalls are on record for this model year.
2018 vs. every other Sierra Denali year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Sierra Denali median. How we score
- Avoid
- Caution
- Solid
- Best
- Not rated
What Sierra Denali owners report
Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
The contact owns a 2018 GMC Sierra 1500 Denali. The contact stated that while driving at an undisclosed speed, and while the vehicle was parked, the running boards unexpectedly lowered. Additionally, there was oil leaking from the vehicle, and the check engine warning light was illuminated. The…
DRIVING DOWN THE HIGHWAY ABOUT 65MPH IT MADE A LOUD CLUNK AND I TOOK IT IN TO SERVICE DEPARTMENT AND THEY TOLD ME I WOULD HAVE TO PAY ABOUT $400.00 TO DRAIN THE TRANSMISSION FLUID AND REPLACE IT. I TOLD THEM M PICK UP ONLY HAS LESS THAN 15,000 MILES ON IT I DON'T THINK THIS IS FAIR, THE SERVICE GU…
TL* THE CONTACT OWNS A 2018 GMC SIERRA DENALI. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 19V328000 (ENGINE) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS NOT YET AVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER HAD EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR.…
Own a 2018 Sierra Denali?
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