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Chevrolet Trailblazer Ext 370 Problems

The Chevrolet Trailblazer EXT is the extended-wheelbase version of GM's mid-size SUV, offering three-row seating and increased cargo capacity. With 740 complaints on file, this truck-based SUV has known issues that buyers should understand before purchasing. The inline-6 engine is notably durable, but other components require attention. For those needing towing capability and space at used truck prices, the Trailblazer EXT fills a specific niche.

740
Total Complaints
0
Total Recalls
5
Model Years
0
Reported Deaths
!

Years to Avoid

These years have significantly more complaints than average.

2005
✓

Best Years

These years have the fewest reported problems.

2002 2003 2004

Common Problem Categories

Electrical System 244
Fuel System, Gasoline 146
Exterior Lighting 50
Fuel/propulsion System 38
Fuel System, Other 32

Complaints by Model Year

All Model Years

Year ↓ Complaints Recalls Crashes Fires Rating
2006 42 0 0 6 Good
2005 600 0 28 2 Avoid
2004 40 0 2 0 Good
2003 38 0 0 0 Good
2002 20 0 6 6 Good

Chevrolet Trailblazer Ext 370 Years to Avoid

The 2005 Trailblazer EXT generated the most complaints, with fan clutch failures leading to overheating, failed speedometer clusters, and electrical issues throughout the vehicle. The 2004 model shares many of these problems plus reports of intake manifold gasket failures. The 2003 model year had significant reports of engine stalling and transmission issues. All years suffer from the famous GM instrument cluster failure where gauges become erratic or stop working entirely.

Best Chevrolet Trailblazer Ext 370 Years

The 2002 Trailblazer EXT had fewer reported issues as an early production year with simpler systems. The 2006-2008 models benefit from running production changes that addressed fan clutch and electrical issues. The inline-6 engine in any year is robust and can exceed 200,000 miles with basic maintenance.

Frequently Asked Questions