2003 Chevrolet TRAILBLAZER EXT 370: complaints, problems and recalls
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.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10434887 · 2011-11-08 (November 8, 2011)
EXHAUST BOLTS HAVE BROKEN ON THE EXHAUST MANIFOLD, THIS VEHICLE HAS THE V8 ENGINE. DEALER EXPLAINS THAT THIS NEEDS FIXED AS CARBON MONOXIDE COULD ENTER THE PASSENGER CABIN. THERE WAS AN ACCIDENT WITH THE VEHICLE A YEAR AGO, I CONTACTED MY INSURANCE COMPANY TO SEE IF IT WAS RELATED TO THE ACCIDENT. THEY CLAIM THAT IT IS NOT RELATED TO THE ACCIDENT AND THAT GM VEHICLES MODEL YEAR 2000 TO 2007 WITH THIS 5.3 V8 ENGINE HAVE REPORTED THESE BOLTS BREAKING AND INFORMED ME TO CONTACT GM ABOUT REIMBURSEMENT FOR REPAIR EXPENSES. I DO NOT HAVE THE $2000 FO…
Owner-reported narrative. 157,000 miles reported. Look up ODI 10434887 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 10630361 · 2014-09-03 (September 3, 2014)
THIS HAS BEEN GOING ON FOR THREE YEARS SINCE 2011 AT NIGHT AT RANDOM TIMES OUR LOW BEAM HEADLIGHTS GO OUT ON US AS YOUR DRIVING DOWN THE HIGHWAY. THEY MAY COME BACK ON BEFORE YOU GET HOME BUT WE HAVE DROVE 1HR 30 MINUTES AND STILL NOT. WE DID TAKE IT IN SEVERAL TIMES AND THEY CAN NOT FINE A PROBLEM. THEY SAID THEY CAN CHANGE THIS N THAT SENOR BUT COULDN'T SAY THAT WOULD EVEN FIX IT. BUT COST US $$$$$$ WHY CAN'T SOME ONE FINE OUT DO A RECALL WE HATE DRIVING ON OUR HIGHBEAM AND SO DOES THE PEOPLE WE PASS OR GET BEHIND. WE DO TRY AND TURN THEM OF…
Owner-reported narrative. Look up ODI 10630361 at NHTSA ↗
Owner report 10652805 · 2014-11-05 (November 5, 2014)
WE WERE DRIVING DOWN THE HIGHWAY WHEN OUR REAR PASSENGER DOOR FLEW OPEN, AND WILL NOT STAY CLOSED OR LOCK. WE HAD TO DRIVE WITH SOMEONE BACK THERE HOLDING IT SHUT TIL WE GOT TO A STORE TO RATCHET STRAP IT CLOSED. I CALLED CHEVY WHEN I SEEN IT WAS PART OF A RECALL FOR THE 2005 BUT THEY WOULD NOT LOOK AT MINE BECAUSE IT WAS NOT THE SAME YEAR AS THE RECALL AND WANT ME TO PAY OUT OF POCKET TO FIX THE PROBLEM, AND WOULD NOT TELL ME K=NAME OF THE PART TO SEE IF I COULD BUY IT AND FIX IT OURSELVES A LOT CHEAPER. *TR
Owner-reported narrative. 160,000 miles reported. Look up ODI 10652805 at NHTSA ↗
Owner report 10669711 · 2015-01-02 (January 2, 2015)
TL* THE CONTACT OWNS A 2003 CHEVROLET TRAILBLAZER EXT 370. THE CONTACT STATED THAT THE TURN SIGNALS DO NOT FUNCTION PROPERLY AND THE HAZARD LIGHTS ILLUMINATED INSTEAD OF THE TURN SIGNALS. THE CONTACT WAS ABLE TO PRESS THE BUTTON FOR THE HAZARD LIGHTS WHEN NEEDED, BUT NOT THE TURN SIGNALS. THE VEHICLE WAS NOT DIAGNOSED. THE FAILURE CONTINUED AND CAUSED THE FRONT HEADLIGHT ASSEMBLY AND THE REAR HEADLIGHT ASSEMBLY TO SHORT AND DIM WITH NO WARNING. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE M…
Owner-reported narrative. 150,000 miles reported. Look up ODI 10669711 at NHTSA ↗
Owner report 10678582 · 2015-01-23 (January 23, 2015)
TL*THE CONTACT OWNS A 2003 CHEVROLET TRAILBLAZER EXT 370. THE CONTACT STATED THAT THE WINDOWS FAILED TO ROLL UP OR DOWN. ALSO, THE CONTACT MENTIONED THAT THE HEATED SEAT WOULD NOT TURN OFF. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 140,000.
Owner-reported narrative. 140,000 miles reported. Look up ODI 10678582 at NHTSA ↗
Owner report 10689484 · 2015-02-19 (February 19, 2015)
AFTER A LONG DAY OF WORK, I RETURNED TO MY PARKED VEHICLE TO DISCOVER A TOTALLY FLAT FRONT RIGHT TIRE, ON CLOSER EXAMINATION IT WAS NOTED THAT THE TIRE HAD SPLIT ON THE OUTSIDE SEAM. IT WAS NOTED THAT THE SAME CONDITION OF THE TIRE SPLITTING WAS VISIBLE ON ALL THREE OF THE OTHER TIRES ON THE VEHICLE. FLAT TIRE WAS REPLACED WITH SPARE TIRE THAT HAD NEVER BEEN USED. I RETURNED THE VEHICLE TO THE PLACE THAT I HAD PURCHASED THE TIRES; THE TECH AT THE STORE EXAMINED THE TIRES AND DECLARED THAT ALL FOUR TIRES WERE MANUFACTURED FROM THE SAME BATCH O…
Owner-reported narrative. 169,141 miles reported. Look up ODI 10689484 at NHTSA ↗
Owner report 10703557 · 2015-04-03 (April 3, 2015)
VEHICLE STARTED LEAVING SPOTS OF OIL ON THE GROUND OVER NIGHT. WAS DRIVING TO WORK ON WEDNESDAY AND A BLUISH CLOUD OF SMOKE WAS TRAILING BEHIND ME. ARRIVED AT WORK AND LET TRUCK COOL DOWN AFTER WHICH I CRAWLED UNDERNEATH AND WITH A MIRROR WAS ABLE TO LOCATE THE LEAKING REAR MAIN SEAL. THIS IS A COMMON PROBLEM WITH GM,S 5.3 LITER ENGINES. MULTIPLE FORUMS ARE POSTING MANY PEOPLE COMPLAINING OF THE SAME ISSUE. GM NEEDS TO STAND BEHIND THERE PRODUCTS AND REPAIR THIS ISSUE WHICH AGAIN IS A WIDE SPREAD KNOWN PROBLEM. *TR
Owner-reported narrative. 109,654 miles reported. Look up ODI 10703557 at NHTSA ↗
Recall history
0 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
No recall campaigns are recorded in this snapshot.