"How reliable is the 2006 Chevrolet Trailblazer Ext 370?"

"Based on 21 NHTSA complaints, the 2006 Chevrolet Trailblazer Ext 370 has a median complaint mileage of 100000 miles. The most common issue is ELECTRICAL SYSTEM."

"What are common problems with the 2006 Chevrolet Trailblazer Ext 370?"

"The most frequently reported component in NHTSA complaints for the 2006 Chevrolet Trailblazer Ext 370 is ELECTRICAL SYSTEM, accounting for a significant portion of the 21 total complaints filed."

2006 Chevrolet Trailblazer Ext 370: Reliability Data

Source: NHTSA — 21 complaints

Total Complaints

100,000mi

Median Mileage

ELECTRICAL SYSTEM

Top Issue

Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

60,900 25th Percentile

100,000 Median Mileage

122,500 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ELECTRICAL SYSTEM

EXTERIOR LIGHTING

FUEL SYSTEM, GASOLINE

ENGINE

ELECTRONIC STABILITY CONTROL (ESC)

VISIBILITY:POWER WINDOW DEVICES AND CONTROLS

SUSPENSION

FUEL/PROPULSION SYSTEM

ENGINE AND ENGINE COOLING

VISIBILITY/WIPER

Severity Assessment

Crashes

Fires

Injuries

Deaths

Sample Complaint Reports

"CHECKING FUEL INDICATOR STARTED TO BE STUCK ON BELOW EMPTY CAUSING ME TO RUN OUT OF GAS ON A FEW OCCASIONS. AND FROM MY UNDERSTANDING THIS HAS BEEN A FLAW IN GM TRUCKS FOR SOMETIME NOW. AND THE COST FOR THE REPAIR IS OVER $500.00. THESE VEHICLES COST TOO MUCH MONEY TO HAVE THESE TYPES OF PROBLEMS..."

"TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT NOTICED THAT THE INSTRUMENT PANEL INCLUDING THE SPEEDOMETER, FUEL GAUGE AND OIL PRESSURE WERE INOPERABLE, CAUSING THEM TO FLUCTUATE AND NOT REMAIN AT A CONSTANT POINT. THE CONTACT WAS UNABLE TO DETERMINE WHAT SPEED HE WAS TRAVELING, HOW M..."

"FUEL GAUGE QUIT WORKING. *TT"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28