Reliability & 5-year cost of ownership — 2015 GMC Denali
NHTSA data on file today
try.vin couldn't confirm NHTSA's recall list for the 2015 GMC Denali, so this page doesn't state a recall count — check the VIN at nhtsa.gov/recalls for current campaigns. 18 owner complaints are on file.
Most-cited components in owner complaints
- Exterior Lighting 6 complaints
- Power Train 5 complaints
- Electrical System 4 complaints
- Service Brakes 2 complaints
- Steering 2 complaints
- Electronic Stability Control (ESC) 1 complaint
Of the 18 complaints on file, 1 reports a crash; across all 18 complaints, owners report 1 injury (owner-reported, not verified by NHTSA).
Average
Estimated 5-year repair + maintenance cost: $6,000–$12,000AI estimate — not from NHTSA data
The 2015 GMC Denali has limited data with 18 owner complaints. Most issues reported are related to exterior lighting and the power train. The evidence suggests an average reliability outlook, with a few isolated issues.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| Exterior lighting | Unknown | $150–$600 | common |
| Power train | Unknown | $800–$2,500 | common |
| Electrical system | Unknown | $100–$1,500 | occasional |
AI estimate — not from NHTSA data: the mileage bands and repair-cost ranges above. Get a written repair quote before you budget.
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake inspections
- Tire rotations
- Transmission fluid replacement
- Coolant system checks
- Battery inspection
- Spark plug replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Dimming or flickering lights
- Transmission slipping
- Electrical shorts or failures
- Brake pedal vibrations
- Steering wheel play
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2015 GMC Denali at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.