AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2007 Gmc Denali
Overall rating NHTSA-grounded
Above average
Estimated 5-year repair + maintenance cost: $5,000–$9,000
The 2007 GMC Denali has minimal recall and complaint data, indicating strong reliability. With very few issues reported, it's considered reliable among its peers.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| air suspension | 80,000–120,000 miles | $700–$1,200 | common |
| transmission | 100,000–150,000 miles | $1,500–$3,000 | occasional |
| radiator | 90,000–130,000 miles | $400–$700 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes
- Brake fluid replacement
- Transmission service
- Tire rotation and balance
- Coolant replacement
- Battery inspection and testing
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Air suspension sag
- Delayed gear shifts
- Overheating signs
- Warning lights on dash
- Unusual vibrations
Generated by gpt-4o on 8/18/2026. Cost ranges are conservative estimates that account for typical regional variation.