AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2014 Gmc Sierra Denali
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $5,000–$9,000
The 2014 GMC Sierra Denali has numerous complaints regarding its braking system, airbags, and structural integrity, impacting its reliability. Combined with a moderate list of complaints across various systems, this warrants a below-average rating.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| service brakes | 50,000–80,000 miles | $400–$900 | very common |
| airbags | 60,000–100,000 miles | $300–$800 | common |
| structure (body) | 70,000–110,000 miles | $500–$1,500 | common |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil change every 5,000 miles
- Brake fluid replacement every 2 years
- Tire rotation every 7,500 miles
- Cabin air filter replacement annually
- Coolant replacement every 50,000 miles
- Transmission fluid change every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Soft brake pedal feel
- Airbag warning light
- Unusual body rattling noises
- Unexpected vehicle vibrations
- Check engine light indicator
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.