Chevrolet Trailblazer EXT 370 Problems by Year

We compared every Chevrolet Trailblazer EXT 370 model year from 2002–2006 using 288 owner complaints filed with NHTSA, 0 recalls and federal defect investigations. The years to avoid are 2005, which drew far more complaints than other Trailblazer EXT 370 years at the same age. The best years are 2002 and 2003.

5model years
288complaints
0recalls
2005worst years
2002, 2003best years

Complaints by model year

200220032004200520066141523716
Owner complaints per model year, Chevrolet Trailblazer EXT 370. Colour = our verdict for that year (red: avoid, orange: caution, green: better than average, blue: too new).
YearComplaintsvs. typical*RecallsTop problemVerdict
2006161.5×—ElectricalAverage
200523733.2×—ElectricalAvoid
2004151.3×—ElectricalAverage
200314−58%—ElectricalAverage
20026−68%—ElectricalAverage

* Complaints compared with the median Trailblazer EXT 370 year at the same age, so new and old years are judged fairly. How this works.

Most common Chevrolet Trailblazer EXT 370 problems

  • Electrical systemworst: 2005
    12042%
  • Fuel & propulsion systemworst: 2005
    10737%
  • Lightsworst: 2005
    269%
  • Engine & coolingworst: 2005
    217%
  • Windows, wipers & sunroofworst: 2005
    145%
  • Body & structureworst: 2005
    83%
  • Air bagsworst: 2005
    83%
  • Speed control & accelerationworst: 2005
    83%
  • Transmission & drivetrainworst: 2005
    62%
  • Other / not specified
    62%
  • Wheels & tiresworst: 2005
    62%
  • Steeringworst: 2005
    41%
  • Brakesworst: 2005
    41%
  • Stability & traction controlworst: 2006
    41%
  • Seatsworst: 2005
    41%
  • Equipment & accessoriesworst: 2005
    41%
  • Locks & latchesworst: 2005
    41%
  • A/C & heaterworst: 2005
    31%
  • Suspensionworst: 2005
    31%
  • Seat beltsworst: 2005
    10%

Frequently asked questions

What years of the Chevrolet Trailblazer EXT 370 should you avoid?

2005 — this year has the most complaints relative to other Trailblazer EXT 370 years at the same age, led by electrical system problems in the 2005.

What is the best year for the Chevrolet Trailblazer EXT 370?

2002 has the fewest complaints compared with other Trailblazer EXT 370 years at the same age, followed by 2003. Newer years can look better simply because fewer complaints have come in yet, so we compare like with like.

What are the most common Chevrolet Trailblazer EXT 370 problems?

Across all years, owners report the most problems with the electrical system (120), fuel & propulsion system (107) and lights (26). Electrical complaints peak in the 2005 model year.

How many recalls has the Chevrolet Trailblazer EXT 370 had?

0 recalls across 2002–2006.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.