2003 Chevrolet TRAILBLAZER EXT 370 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
14 owner complaints analyzed
0 distinct recall campaigns
140,000 mi median reported failure mileage
Scope: 2003 model year. Data snapshot: . 13 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 6 of 14 complaints (42.9%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Electrical and battery issues | 2 | 14.3% |
| Fuel system concerns | 1 | 7.1% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 6 |
| Fuel/Propulsion System | 3 |
| Exterior Lighting | 2 |
| Electronic Stability Control (Esc) | 1 |
| Engine | 1 |
| Engine And Engine Cooling | 1 |
| Structure:Body:Hatchback/Liftgate | 1 |
| Tires | 1 |
Electrical System: 6; Fuel/Propulsion System: 3; Exterior Lighting: 2; Electronic Stability Control (Esc): 1; Engine: 1; Engine And Engine Cooling: 1; Structure:Body:Hatchback/Liftgate: 1; Tires: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 1 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 2 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 3 |
| 150,000 and above | 6 |
Under 25,000: 1; 25,000 to 49,999: 0; 50,000 to 74,999: 2; 75,000 to 99,999: 1; 100,000 to 149,999: 3; 150,000 and above: 6
150,000 and above miles has the most reports with usable mileage (6). 1 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2011 | 1 |
| 2012 | 1 |
| 2014 | 2 |
| 2015 | 9 |
| 2016 | 1 |
2011: 1; 2012: 1; 2014: 2; 2015: 9; 2016: 1
Pattern summary
Electrical System leads the component reports. Electrical and battery issues appears in 2 complaint narratives. Fuel system concerns appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10445546 · 2012-01-27 (January 27, 2012)
SPEEDOMETER TACHOMETER AND BATTERY GAUGE DO NOT WORK. *TR
Owner-reported narrative. 60,000 miles reported. Look up ODI 10445546 at NHTSA ↗
Owner report 10817099 · 2015-12-30 (December 30, 2015)
2003 CHEVROLET TRAILBLAZER 370 REAR PASSENGER SIDE DOOR ELECTRICAL WINDOW CONTROL SWITCH WOULD NOT COMPLETELY CLOSE WINDOW . SMELLED LIKE ELECTRICAL WIRE BURNING. HAD VEHICLE STOP AT TIME AND HAD ASSISTANCE IN REMOVING DOOR INTERIOR PANEL AND FOUND ELECTRICAL WINDOW SWITCH COMPLETELY MELTED AND WIRE CONNECTION BURNED . PERSONAL VEHICLE USED ON VACATION, STOPPED JUST OFF HIGHWAY AT TIME . *JS
Owner-reported narrative. 70,000 miles reported. Look up ODI 10817099 at NHTSA ↗
Owner report 10807225 · 2015-11-27 (November 27, 2015)
TL* THE CONTACT OWNS A 2003 CHEVROLET TRAILBLAZER EXT 370. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE SURGED FORWARD AND THE RPMS FLUCTUATED WITHOUT WARNING. IN ADDITION, THE CONTACT STATED THAT AN ABNORMAL FUEL ODOR EMITTED FROM THE VEHICLE AS THE CHECK FUEL WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE FUEL TANK VACUUM AND FUEL TANK NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMAT…
Owner-reported narrative. 150,000 miles reported. Look up ODI 10807225 at NHTSA ↗