AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2004 Chevrolet Trailblazer
Overall rating NHTSA-grounded
Below average
Estimated 5-year repair + maintenance cost: $7,000–$12,000
The 2004 Chevrolet Trailblazer has notable issues with exterior lighting system failures and other miscellaneous problems, leading to a below-average reliability rating.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| Exterior lighting | 50,000–80,000 miles | $150–$300 | very common |
| Ignition switch | 60,000–90,000 miles | $250–$450 | common |
| Transmission | 90,000–120,000 miles | $1,200–$3,000 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil changes every 5,000 miles
- Replace air filter every 30,000 miles
- Transmission fluid change every 60,000 miles
- Brake fluid flush every 3 years
- Replace spark plugs every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Erratic turn signal operation
- Flickering or dim brake lights
- Difficulty starting the engine
Generated by gpt-4o on 6/9/2026. Cost ranges are conservative estimates that account for typical regional variation.