Chevrolet TRAILBLAZER EXT 370 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
288 owner complaints analyzed
0 distinct recall campaigns
73,313 mi median reported failure mileage
Scope: 2002 to 2006 model years. Data snapshot: . 245 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 87 of 288 complaints (30.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Fuel system concerns | 32 | 11.1% |
| Electrical and battery issues | 26 | 9.0% |
| Braking behavior | 16 | 5.6% |
| Engine operation | 15 | 5.2% |
| Steering behavior | 10 | 3.5% |
| Transmission and shifting | 5 | 1.7% |
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 | 87 |
| Fuel System, Gasoline | 72 |
| Electrical System: Instrument Cluster/Panel | 33 |
| Exterior Lighting | 21 |
| Fuel/Propulsion System | 19 |
| Fuel System, Other | 13 |
| Engine | 8 |
| Air Bags | 6 |
Electrical System: 87; Fuel System, Gasoline: 72; Electrical System: Instrument Cluster/Panel: 33; Exterior Lighting: 21; Fuel/Propulsion System: 19; Fuel System, Other: 13; Engine: 8; Air Bags: 6
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 13 |
| 25,000 to 49,999 | 43 |
| 50,000 to 74,999 | 71 |
| 75,000 to 99,999 | 60 |
| 100,000 to 149,999 | 43 |
| 150,000 and above | 15 |
Under 25,000: 13; 25,000 to 49,999: 43; 50,000 to 74,999: 71; 75,000 to 99,999: 60; 100,000 to 149,999: 43; 150,000 and above: 15
50,000 to 74,999 miles has the most reports with usable mileage (71). 43 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 |
|---|---|
| 2005 | 5 |
| 2006 | 8 |
| 2007 | 13 |
| 2008 | 12 |
| 2009 | 24 |
| 2010 | 74 |
| 2011 | 64 |
| 2012 | 13 |
| 2013 | 12 |
| 2014 | 20 |
| 2015 | 24 |
| 2016 | 10 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 1 |
2005: 5; 2006: 8; 2007: 13; 2008: 12; 2009: 24; 2010: 74; 2011: 64; 2012: 13; 2013: 12; 2014: 20; 2015: 24; 2016: 10; 2017: 6; 2018: 2; 2019: 1
Pattern summary
Electrical System leads the component reports. Fuel system concerns appears in 32 complaint narratives. Electrical and battery issues appears in 26 complaint narratives. Braking behavior appears in 16 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 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 ↗
Owner report 10359201 · 2010-10-05 (October 5, 2010)
2004 CHEVY TRAILBLAZER EXT NORTHFACE EDITION WITH THE V8 ENGINE IS LEAKING GAS DUE TO A CRACK IN THE GAS TANK AND THE REPAIR IS OVER 1000$, MY TRUCK ONLY HAS 7500 MILES ON IT AND EVERYTHING SEEMS TO BE MESSING UP. *TR
Owner-reported narrative. 74,000 miles reported. Look up ODI 10359201 at NHTSA ↗
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 10662229 · 2014-12-04 (December 4, 2014)
I WAS SLOWING DOWN AS I WAS ENTERING AN INTERSECTION AND THERE WAS TRAFFIC IN FRONT OF ME. I SUDDENLY LOST ALL POWER STEERING AND POWER BRAKES AND STRUCK THE CAR IN FRONT OF ME. NONE OF THE OCCUPANTS OF EITHER VEHICLE WAS HURT, PER POLICE REPORT. ON MY WAY TO THE COLLISION CENTER NEAR HOME, THE CAB OF THE TRUCK FILLED SUDDENLY WITH VERY BLACK SMOKE, SO THICK I COULDN'T SEE AND HAD TO IMMEDIATELY TRY TO PULL OFF THE ROAD. BY THE TIME I GOT TO THE SIDE OF THE ROAD THERE WERE FLAMES IN THE CAB AS WELL. WHEN I FINALLY GOT OUT OF THE TRUCK MY CLOTHE…
Owner-reported narrative. 120,000 miles reported. Look up ODI 10662229 at NHTSA ↗
Owner report 10188324 · 2007-04-19 (April 19, 2007)
MY VEHICLE HAS NUMEROUS TIMES QUIT RUNNING (SINCE PURCHASE 2004) BY FIRST BEING UNSTABLE AND ROUGH ENGINE IDLE. IT'S MORE NOTICEABLE AFTER DRIVING FOR LONG PERIOD OF TIME ON HIGHWAY AND THEN COMING TO A FULL STOP AT AN EXIT; VEHICLE WILL SURGE AT LOW SPEED/SHUDDER AND WILL STOP RUNNING. THE ONLY WAY TO KEEP VEHICLE RUNNING IS BY PRESSING GAS AND BRAKE (NOT SAFE). TALKED TO DEALERSHIP AN THERE IS NO FIX. *TR
Owner-reported narrative. 15,000 miles reported. Look up ODI 10188324 at NHTSA ↗
Owner report 10725807 · 2015-06-17 (June 17, 2015)
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER EXT 370. WHILE IN A PARKING LOT, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TOWED TO AN INDEPENDENT DEALER. THE TECHNICIAN DIAGNOSED THAT THE FUEL PUMP AND FUEL FILTER NEEDED TO BE REPLACED THE FILLER INLET WAS ALSO CRACKED. THE CONTACT MENTIONED THAT THE FUEL PUMP, THE FUEL FILTER, AND THE HOSE WERE REPLACED. HOWEVER, THE FUEL TANK FILLER INLET WAS NOT. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 115,869.
Owner-reported narrative. 115,869 miles reported. Look up ODI 10725807 at NHTSA ↗
Owner report 10165615 · 2006-08-16 (August 16, 2006)
DT*: THE CONTACT STATED WHILE DRIVING VARIOUS SPEEDS, THE ENGINE STALLED WITHOUT WARNING. AFTERWARD, THE ENGINE EASILY RESTARTED. THE VEHICLE WAS INSPECTED BY A DEALER WHO WAS UNABLE TO DUPLICATE THE PROBLEM. THE MANUFACTURER WAS ALERTED. UPDATED 09/12/06. *JB
Owner-reported narrative. 28,000 miles reported. Look up ODI 10165615 at NHTSA ↗
Owner report 10669818 · 2015-01-03 (January 3, 2015)
MY SON [XXX] WAS INVOLVED IN A SINGLE CAR ACCIDENT (HIT A DEER AND RAN OFF THE ROAD) IN WHICH OUR 2004 CHEVY TRAILBLAZER WAS TOTALED IN A ROLL OVER AND NOT ONE SINGLE AIRBAG DEPLOYED IN THE ACCIDENT. AS A RESULT OF NO AIRBAG HE SMASHED HIS FOREHEAD INTO THE STEERING WHEEL LEAVING A 2 INCH GASH, CUT TO THE BONE. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
Owner-reported narrative. 150,000 miles reported. Look up ODI 10669818 at NHTSA ↗
Owner report 10174496 · 2006-11-27 (November 27, 2006)
I HAVE A 2002 TRAILBLAZER, THE TRANSMISSION JUST WENT OUT ON IT. I ONLY HAVE 75,000 MILE AND AFTER DOING SOME RESEARCH HAVE FOUND OUT THAT I'M NOT THE ONLY ONE THAT HAS HAD THIS PROBLEM. JUST ON GOGGLE THERE ARE 97,100 HITS FOR TRANSMISSION PROBLEMS WITH THE TRAILBLAZER. *JB
Owner-reported narrative. 75,100 miles reported. Look up ODI 10174496 at NHTSA ↗
Owner report 10140521 · 2005-10-23 (October 23, 2005)
BRAND NEW 2005 CHEVROLET TRAILBLAZER TRANSMISSION WONT DOWNSHIFT BACK INTO LOW GEAR UPON COMING TO A STOP. DEALER SAID THEY FIXED THE PROBLEM THE FIRST TIME IT HAPPENED (AT 600 MILES) BY REPLACING A SENSOR. IT HAS JUST NOW STARTED HAPPENING AGAIN (AT 2,100 MILES). *NM
Owner-reported narrative. 2,100 miles reported. Look up ODI 10140521 at NHTSA ↗
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2002 | 0 |
| 2003 | 0 |
| 2004 | 0 |
| 2005 | 0 |
| 2006 | 0 |
2002: 0; 2003: 0; 2004: 0; 2005: 0; 2006: 0