AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2009 Gmc Sierra
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $5,000–$10,000
The 2009 GMC Sierra generally holds an average reliability rating with notable issues in its electrical system and air bags. While these problems can be concerning, they are not significantly more frequent than typical for vehicles of this class and age.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| electrical system | 80,000–120,000 miles | $300–$700 | common |
| air bags | 70,000–100,000 miles | $250–$600 | common |
| structure | 100,000–150,000 miles | $400–$800 | occasional |
| engine | 90,000–130,000 miles | $500–$1,500 | occasional |
| steering | 100,000–140,000 miles | $350–$1,000 | rare |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil and filter changes every 5,000 miles
- Replace air filter every 20,000 miles
- Change transmission fluid every 50,000 miles
- Inspect brakes every 20,000 miles
- Rotate tires every 10,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Check engine light on often
- Air bag warning lights
- Unresponsive electrical components
- Stiff or unresponsive steering
- Rattling noises from structure
Generated by gpt-4o on 7/25/2026. Cost ranges are conservative estimates that account for typical regional variation.