2005 Chevrolet Trailblazer Ext 370 problems
Verdict · NHTSA data
One of the years to avoid
With 300 complaints filed to NHTSA — about 15.0 times the median Trailblazer Ext 370 year — the 2005 model ranks #1 of 5 Trailblazer Ext 370 years for complaint volume. It lands on the years-to-avoid list. Complainants reported 18 injuries in total across these filings.
Electrical System leads the complaint categories with 104 reports (35% of the total).
300
NHTSA complaints
0
Recalls
2
Investigations
14
Crash-involved
1
Fires reported
18
Injuries
0
Deaths
—
NCAP overall
How does 2005 compare to other Trailblazer Ext 370 years?
What are the most common 2005 Chevrolet Trailblazer Ext 370 problems?
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Electrical System | 104 | 35% | ▲ up |
| Fuel System | 96 | 32% | ▲ up |
| Lighting | 18 | 6% | ▲ up |
| Engine | 15 | 5% | ▲ up |
| Visibility & Wipers | 12 | 4% | ▲ up |
| Other | 8 | 3% | ▲ up |
| Speed Control | 8 | 3% | new |
| Airbags | 7 | 2% | ▲ up |
| Tires & Wheels | 6 | 2% | ▲ up |
| Body & Structure | 6 | 2% | ▲ up |
| Transmission | 5 | 2% | ▲ up |
| Latches & Locks | 4 | 1% | new |
| Steering | 3 | 1% | ▲ up |
| Seats | 3 | 1% | ▲ up |
| Brakes | 2 | 1% | ▲ up |
| Suspension | 2 | 1% | new |
| Seat Belts | 1 | 0% | new |
Consumer complaints filed with NHTSA
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“WINDOW SWITCH PANEL ON DRIVERS DOOR CAUGHT FIRE OVERNIGHT WHILE PARKED IN GARAGE. NO PROBLEMS BEFORE THIS EVENT. FUSE BLEW STOPPING THE ELECTRIC CURRENT AND THE FIRE BURNT OUT ON ITS OWN. I DISCOVERED THE DAMAGE IN THE MORNING AS I WAS GETTING IN THE VEHICLE TO DRIVE TO WORK. *TR”
“MY 2005 CHEVY TRAILBLAZER IS COMPLETELY GOING CRAZY IT SEEMS EVERYTHING ELECTRICAL IS GOING WRONG WITH IT. I AM AFRAID TO LET MY WIFE OR MY KIDS DRIVE IN IT BECAUSE I NEVER KNOW WHAT'S GOING TO GO WRONG WHILE DRIVING. MY WHOLE GAS SYSTEM IS GONE FROM FUEL LEVEL INDICATOR TO THE GAUGE. MY ENTIRE…”
“ALL OF A SUDDEN HEADLIGHTS STOPPED WORKING. I HAVE CHANGED THE BULBS, FUSES AND RELAY. HAD THIS PROBLEMS CHECKED OUT SEVERAL TIMES, NO ONE CAN FIND A SOLUTION TO WHY THEY DON'T WORK. I WAS ON THE HIGHWAY COMING HOME WHEN THEY JUST STOPPED WORKING, I HAD TO PUT MY HIGH BEAMS ON TO BE ABLE TO GET…”
“MY 05 TRAILBLAZER KEEPS SHUTTING OFF WHILE DRIVING DOWN A CITY STREET. IN A 2-MILE STRETCH IT SHUT OFF 5 TIMES WITH COMPLETE LOSS OF STEERING CONTROL ALMOST CAUSING A SERIOUS ACCIDENT. THE VEHICLE TREMBLED AND THEN TURNED OFF. IT HAS SHUT OFF ON ME WHILE DRIVING ON THREE OTHER OCCASIONS ON PREVIOUS…”
“I OWN A 2005 CHEVROLET TRAILBLAZER EXT. 2 WEEKS AGO I OPENED THE REAR GATE AND THE REAR GLASS EXPLODED OVER MY HEAD. HAD GLASS AND SPOILER REPAIRED BY GLASS CO. WITH NEW PARTS. TODAY THE SAME THING HAPPENED AFTER I OPENED THE TAIL GATE AND WAS WALKING AWAY. SEEMS TO BE A BAD DESIGN FLAW BY…”
2005 Chevrolet Trailblazer Ext 370 — common questions
Is the 2005 Chevrolet Trailblazer Ext 370 reliable?
NHTSA data argues against it: 300 complaints put the 2005 model at #1 of 5 Trailblazer Ext 370 years. It is one of the Trailblazer Ext 370 years to avoid.
What are the most common 2005 Trailblazer Ext 370 problems?
According to NHTSA complaint data, the leading problem areas are electrical system (104 complaints), fuel system (96 complaints), lighting (18 complaints).
Does the 2005 Chevrolet Trailblazer Ext 370 have recalls?
No. NHTSA lists no recall campaigns for the 2005 Chevrolet Trailblazer Ext 370.
Is the 2005 Chevrolet Trailblazer Ext 370 under NHTSA investigation?
NHTSA opened 2 investigations into this model year; all are now closed.
Which Chevrolet Trailblazer Ext 370 years should you avoid?
Based on complaint rates and open investigations, the Trailblazer Ext 370 years to avoid are 2005. The cleanest record among Trailblazer Ext 370 years belongs to 2002.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.