Total Complaints
300 filings
CHEVROLET TRAILBLAZER EXT 370 · model year
300 NHTSA complaints, 14 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2005CHEVROLETTRAILBLAZER EXT 370 carries 300 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 14 crashes, 1 fire, 18 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2005 TRAILBLAZER EXT 370 is electrical system with 69 filings, followed by fuel system, gasoline (67) and electrical system: instrument cluster/panel (32). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 57 investigation files overlapping the 2005 TRAILBLAZER EXT 370, and 2 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
300 filings
Crashes Reported
14 reports
Source
NHTSA ODI
Federal complaints database
Above median complaint volume — review patterns below.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM | 69 |
| FUEL SYSTEM, GASOLINE | 67 |
| ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL | 32 |
| FUEL SYSTEM, OTHER | 13 |
| EXTERIOR LIGHTING | 12 |
| FUEL/PROPULSION SYSTEM | 11 |
| VEHICLE SPEED CONTROL | 6 |
| AIR BAGS | 5 |
| EQUIPMENT | 4 |
| ENGINE AND ENGINE COOLING:EXHAUST SYSTEM | 4 |
| UNKNOWN OR OTHER | 4 |
| ENGINE | 4 |
| POWER TRAIN:AUTOMATIC TRANSMISSION | 3 |
| TIRES | 3 |
| ENGINE AND ENGINE COOLING | 3 |
STOP IT STARTS JERKING AND CHECK ENGINE LIGHT FLASHS HEAD WENT BAD AT 109 THOSAND MILES
Mileage: 109,000
STOP IT STARTS JERKING AND CHECK ENGINE LIGHT FLASHS HEAD WENT BAD AT 109 THOSAND MILES
Mileage: 109,000
THE WHOLE INSTRUMENT CLUSTER DOES NOT WORK ANYMORE, DOES NOT LET ME KNOW HOW FAST I'M GOING OR HOW MUCH FUEL I HAVE, OIL PRESSURE GAUGE DOESN'T WORK, TEMPERATURE GAUGE DOESN'T WORK... WHY HASN'T THIS BEEN RECALLED? THIS IS VERY DANGEROUS, CONSIDERING I HAVE 4 KIDS THAT ARE CONSTANTLY IN THE CAR WITH ME AND I HAVE NO IDEA WHAT IS GOING ON WITH MY VEHICLE?? AND IT ALSO TELLS ME THAT MY FUEL LEVEL IS LOW, EVEN AFTER I FILL MY TANK. THIS SEEMS LIKE A VERY COMMON PROBLEM IN THESE VEHICLES, WHY HAS IT NOT BEEN CONSIDERED A SAFETY ISSUE????
THE WHOLE INSTRUMENT CLUSTER DOES NOT WORK ANYMORE, DOES NOT LET ME KNOW HOW FAST I'M GOING OR HOW MUCH FUEL I HAVE, OIL PRESSURE GAUGE DOESN'T WORK, TEMPERATURE GAUGE DOESN'T WORK... WHY HASN'T THIS BEEN RECALLED? THIS IS VERY DANGEROUS, CONSIDERING I HAVE 4 KIDS THAT ARE CONSTANTLY IN THE CAR WITH ME AND I HAVE NO IDEA WHAT IS GOING ON WITH MY VEHICLE?? AND IT ALSO TELLS ME THAT MY FUEL LEVEL IS LOW, EVEN AFTER I FILL MY TANK. THIS SEEMS LIKE A VERY COMMON PROBLEM IN THESE VEHICLES, WHY HAS IT NOT BEEN CONSIDERED A SAFETY ISSUE????
I HAVE 2005 CHEVROLET TRAILBLAZER 4WD EXT LS 4.2 LITER. I NOTICED OVER PAST 3 YEARS THAT I BE AT DRIVE THROUGH FOR BURGERS AND ETC. THE CAR WOULD CUT OFF. I DID NOT THINK MUCH OF IT AT THE TIME. IT HAS GOTTEN CRITICALLY WORSE. IT WOULD CUT OFF IN MIDDLE OF THE HIGHWAY, DRIVE THROUGHS AND ETC. DURING THE PAST TWO YEARS I HAVE RE THE LUSTER AND OVER HEAD DOME LIGHT FLICKER. HEAD LIGHTS VERY DIM ON DRIVING ALSO I HAVE REPLACED ON THIS VEHICLE THE FUEL THROTTLE AND SENSOR, A CRANK SENSOR A CAM SENSOR, A TEMP SENSOR 4 POWER STEERING PUMPS NEW THE POWER STEERING RACK AND ASSEMBLY WHEEL HUBS AND BEARINGS, ALL NEW COILS SPARK PLUGS, BELT IDLE PULLEY POWER STEERING PULLEY CHANGE OIL EVERY 3,000 MILES AIR FILTER CHANGE BATTERY, UPDATED SOFT WARE, FLUSH FUEL SYSTEM, SERVICE THE AIR CONDITION REPLACED REAR SHOCKS, GM RELACED PULLEY ON ENGINE 2010 REPLACED THE PVC HOSE FLUSH RADIATOR AND BRAKE SYSTEM, ROTATION AND ALIGNMENT DONE EVERY 5000 MILES, REPLACED HEADLIGHT LOW BEAM BULBS AND
Mileage: 81,000
I HAVE 2005 CHEVROLET TRAILBLAZER 4WD EXT LS 4.2 LITER. I NOTICED OVER PAST 3 YEARS THAT I BE AT DRIVE THROUGH FOR BURGERS AND ETC. THE CAR WOULD CUT OFF. I DID NOT THINK MUCH OF IT AT THE TIME. IT HAS GOTTEN CRITICALLY WORSE. IT WOULD CUT OFF IN MIDDLE OF THE HIGHWAY, DRIVE THROUGHS AND ETC. DURING THE PAST TWO YEARS I HAVE RE THE LUSTER AND OVER HEAD DOME LIGHT FLICKER. HEAD LIGHTS VERY DIM ON DRIVING ALSO I HAVE REPLACED ON THIS VEHICLE THE FUEL THROTTLE AND SENSOR, A CRANK SENSOR A CAM SENSOR, A TEMP SENSOR 4 POWER STEERING PUMPS NEW THE POWER STEERING RACK AND ASSEMBLY WHEEL HUBS AND BEARINGS, ALL NEW COILS SPARK PLUGS, BELT IDLE PULLEY POWER STEERING PULLEY CHANGE OIL EVERY 3,000 MILES AIR FILTER CHANGE BATTERY, UPDATED SOFT WARE, FLUSH FUEL SYSTEM, SERVICE THE AIR CONDITION REPLACED REAR SHOCKS, GM RELACED PULLEY ON ENGINE 2010 REPLACED THE PVC HOSE FLUSH RADIATOR AND BRAKE SYSTEM, ROTATION AND ALIGNMENT DONE EVERY 5000 MILES, REPLACED HEADLIGHT LOW BEAM BULBS AND
Mileage: 81,000
I HAVE 2005 CHEVROLET TRAILBLAZER 4WD EXT LS 4.2 LITER. I NOTICED OVER PAST 3 YEARS THAT I BE AT DRIVE THROUGH FOR BURGERS AND ETC. THE CAR WOULD CUT OFF. I DID NOT THINK MUCH OF IT AT THE TIME. IT HAS GOTTEN CRITICALLY WORSE. IT WOULD CUT OFF IN MIDDLE OF THE HIGHWAY, DRIVE THROUGHS AND ETC. DURING THE PAST TWO YEARS I HAVE RE THE LUSTER AND OVER HEAD DOME LIGHT FLICKER. HEAD LIGHTS VERY DIM ON DRIVING ALSO I HAVE REPLACED ON THIS VEHICLE THE FUEL THROTTLE AND SENSOR, A CRANK SENSOR A CAM SENSOR, A TEMP SENSOR 4 POWER STEERING PUMPS NEW THE POWER STEERING RACK AND ASSEMBLY WHEEL HUBS AND BEARINGS, ALL NEW COILS SPARK PLUGS, BELT IDLE PULLEY POWER STEERING PULLEY CHANGE OIL EVERY 3,000 MILES AIR FILTER CHANGE BATTERY, UPDATED SOFT WARE, FLUSH FUEL SYSTEM, SERVICE THE AIR CONDITION REPLACED REAR SHOCKS, GM RELACED PULLEY ON ENGINE 2010 REPLACED THE PVC HOSE FLUSH RADIATOR AND BRAKE SYSTEM, ROTATION AND ALIGNMENT DONE EVERY 5000 MILES, REPLACED HEADLIGHT LOW BEAM BULBS AND
Mileage: 81,000
I BOUGHT 2005 CHEVROLET TRAILBLAZER AND THE FUEL GAUGE IS DEFECTIVE. IT IS CRAZY TO HEAR BEEP SOUNDING ALL THE TIME TELLING ME THE GAUGE IS EMPTY WHEN I KNOW FOR SURE IS NOT. I WISH IT COULD BE FIXED, BECAUSE I HAVE MANY OTHERS THINGS IN MY PLATE THAT NEED TO WORRY, I REALLY DON'T NEED ANOTHER ONE.
DRIVING 6 PEOPLE TO PITTSBURGH INTERNATIONAL AIRPORT AT 3 AM 8/5/17 ON THE PARKWAY TO CATCH A FLIGHT FOR A VACATION WHEN NOTICED LOW BEAM HEADLIGHTS WERE NOT WORKING. DO NOT KNOW HOW LONG I WAS DRIVING BEFORE THIS WAS NOTICED. LOW BEAMS WORKED THE EVENING OF 8/12/17 @ 10 PM AFTER RETURNING TO PITTSBURGH AIRPORT AND DRIVING HOME. LOW BEAMS DID NOT WORK AGAIN ON THE EVENING OF 8/24/17 WHEN DRIVING HOME FROM A BASEBALL GAME. REPAIRS WERE COMPLETED 9/1/17 BY NICK CHEVROLET IN TARENTUM, PA. I HAD ASKED BEFORE AND AFTER THE REPAIRS WHETHER THIS WOULD BE COVERED UNDER RECALL BUT WAS TOLD NO BECAUSE MY VIN NUMBER WAS NOT A PART OF THE RECALL FOR THIS ISSUE. THEY MADE IT SEEM LIKE THIS WAS A SEPARATE ISSUE FROM THE KNOWN LOW BEAM ISSUE RECALL OF OTHER CHEVY MODELS. I ALSO CALLED THE GM CUSTOMER SERVICE LINE TO SEE IF I COULD GET REIMBURSED FOR THIS ISSUE BUT WAS TOLD THE SAME THING; THAT MY VIN NUMBER WAS NOT A PART OF THE RECALL AND IT IS BASED ON WHAT FACTORY THE CAR WAS MADE AT? THE PART NUM
Mileage: 121,000
FOR THE 3RD TIME THE CLUSTER HAS GONE OUT. THIS RESULTS IN THE SPEEDOMETER, TEMPERATURE GAUGE AND OTHERS TO STOP WORKING. EACH TIME I AM EXPECTED TO TAKE MY VEHICLE TO A CHEVROLET MECHANIC FOR DIAGNOSIS AND PART REPLACEMENT AT $700.00+ EACH TIME. THIS MODEL HAS NO RECALL. I AM FED UP WITH PAYING THIS MUCH EVERY 3-4 YEARS FOR A DEFECTIVE PART. THERE HAS NEVER BEEN ANY SIGN BEFORE IT GOES OUT.
Mileage: 750
OUR 2005 CHEVY TRAILBLAZER SPEEDOMETER STOPPED WORKING. THIS HAS HAPPENED ON MANY OF THESE VEHICLES. IT IS A VERY EXPENSIVE FIX AND IT'S A DANGER TO DRIVERS NOT KNOWING HOW FAST THEY ARE TRAVELING.
MY 2005 CHEVY TRAILBLAZER EXT IS LEAKING GAS FROM THE GAS TANK UNDERNEATH THE VEHICLE WHEN THE SUV IS RUNNING.
Mileage: 140,000
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 YEARS BUT IT ONLY OCCURRED ONCE AND THEN STOPPED ON THOSE OCCASIONS.
Mileage: 80,000
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 YEARS BUT IT ONLY OCCURRED ONCE AND THEN STOPPED ON THOSE OCCASIONS.
Mileage: 80,000
THERE IS ALREADY A RECALL OUT FOR THE 2006 MODEL YEAR, BUT I KNOW THAT MINE IS PART OF IT. I HAVE A 2005 TRAILBLAZER AND THE HEADLIGHTS KEEP INTERMITTENTLY GOING OUT AS I AM DRIVING DOWN THE ROAD. THIS PROBLEM AS HAPPENED TO ME BEFORE IN THE PAST AND I WAS ABLE TO FINALLY REMEDY THE ISSUE BY REPLACING THE RELAY. THE PROBLEM HAS NOW RETURNED AND I HAVE EVEN BEEN PULLED OVER MULTIPLE TIMES FOR IT. AFTER DOING A QUICK GOOGLE SEARCH TODAY I DISCOVERED THAT THERE ARE TONS!!!!! OF PEOPLE WITH THE SAME ISSUE GOING BACK AS FAR AS 2002. HTTP://WWW.TOPIX.COM/FORUM/AUTOS/CHEVROLET-TRAILBLAZER/T32JTL93I9FKAUF4N HTTP://FORUMS.TRAILVOY.COM/SHOWTHREAD.PHP?T=47492 HTTP://CHEVROLETFORUM.COM/FORUM/TRAILBLAZER-27/2003-TRAILBLAZER-HEADLIGHTS-2588/ I ALSO RAN ACROSS THAT GM HAS ISSUED A RECALL FOR HEADLIGHTS, BUT IT ONLY COVERS YEARS 2006-2008. HTTP://FORTUNE.COM/2014/12/01/GM-RECALLS-316000-VEHICLES-BECAUSE-OF-MALFUNCTIONING-HEADLIGHTS/ CLEARLY!!!! THIS PROBLEM IS NOT LIMITED TO
Mileage: 90,000
THERE IS ALREADY A RECALL OUT FOR THE 2006 MODEL YEAR, BUT I KNOW THAT MINE IS PART OF IT. I HAVE A 2005 TRAILBLAZER AND THE HEADLIGHTS KEEP INTERMITTENTLY GOING OUT AS I AM DRIVING DOWN THE ROAD. THIS PROBLEM AS HAPPENED TO ME BEFORE IN THE PAST AND I WAS ABLE TO FINALLY REMEDY THE ISSUE BY REPLACING THE RELAY. THE PROBLEM HAS NOW RETURNED AND I HAVE EVEN BEEN PULLED OVER MULTIPLE TIMES FOR IT. AFTER DOING A QUICK GOOGLE SEARCH TODAY I DISCOVERED THAT THERE ARE TONS!!!!! OF PEOPLE WITH THE SAME ISSUE GOING BACK AS FAR AS 2002. HTTP://WWW.TOPIX.COM/FORUM/AUTOS/CHEVROLET-TRAILBLAZER/T32JTL93I9FKAUF4N HTTP://FORUMS.TRAILVOY.COM/SHOWTHREAD.PHP?T=47492 HTTP://CHEVROLETFORUM.COM/FORUM/TRAILBLAZER-27/2003-TRAILBLAZER-HEADLIGHTS-2588/ I ALSO RAN ACROSS THAT GM HAS ISSUED A RECALL FOR HEADLIGHTS, BUT IT ONLY COVERS YEARS 2006-2008. HTTP://FORTUNE.COM/2014/12/01/GM-RECALLS-316000-VEHICLES-BECAUSE-OF-MALFUNCTIONING-HEADLIGHTS/ CLEARLY!!!! THIS PROBLEM IS NOT LIMITED TO
Mileage: 90,000
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER EXT 370. THE CONTACT STATED THAT WHILE DRIVING AT 60 MPH, THE VEHICLE FAILED TO ACCELERATE WHEN THE ACCELERATOR PEDAL WAS DEPRESSED. THE FAILURE OCCURRED ONCE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE THROTTLE BODY HAD FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 190,000.
Mileage: 190,000
ELECTRICAL ISSUES:VEHICLE DASHBOARD LIGHTS WILL SHOW DOOR GATE OPEN, DOOM LIGHTS WIL BE ON, RINGING BELL WHEN THE DOOR WOULD BE OPEN AND YET ITS ACTUALLY CLOSED, AS ALL CONTINUES TO GO AT ANY GIVEN TIME WHEN THE VEHICLE IS IN MOVEMENT. SPEED ODOMETER GAGE DOESN'T READ WHEN VEHICLE IS IN MOVEMENT AND THE GAS GAGE DOESN'T READ THE CORRECT LEVEL OF SHOWING HOW MUCH GAS IS IN VEHICLE. THIS IS A BIG SAFETY ISSUES CAUSE IT HAS ME WORRIED OF NOT KNOWING HOW MUCH GAS I HAVE BEFORE IT RUNS OUT OF GAS RISKING MYSELF AND OTHERS BECAUSE VEHICLE ALL OF A SUDDENNESS LOSES SPEED AND SHUTS DOWN.
ELECTRICAL ISSUES:VEHICLE DASHBOARD LIGHTS WILL SHOW DOOR GATE OPEN, DOOM LIGHTS WIL BE ON, RINGING BELL WHEN THE DOOR WOULD BE OPEN AND YET ITS ACTUALLY CLOSED, AS ALL CONTINUES TO GO AT ANY GIVEN TIME WHEN THE VEHICLE IS IN MOVEMENT. SPEED ODOMETER GAGE DOESN'T READ WHEN VEHICLE IS IN MOVEMENT AND THE GAS GAGE DOESN'T READ THE CORRECT LEVEL OF SHOWING HOW MUCH GAS IS IN VEHICLE. THIS IS A BIG SAFETY ISSUES CAUSE IT HAS ME WORRIED OF NOT KNOWING HOW MUCH GAS I HAVE BEFORE IT RUNS OUT OF GAS RISKING MYSELF AND OTHERS BECAUSE VEHICLE ALL OF A SUDDENNESS LOSES SPEED AND SHUTS DOWN.
ELECTRICAL ISSUES:VEHICLE DASHBOARD LIGHTS WILL SHOW DOOR GATE OPEN, DOOM LIGHTS WIL BE ON, RINGING BELL WHEN THE DOOR WOULD BE OPEN AND YET ITS ACTUALLY CLOSED, AS ALL CONTINUES TO GO AT ANY GIVEN TIME WHEN THE VEHICLE IS IN MOVEMENT. SPEED ODOMETER GAGE DOESN'T READ WHEN VEHICLE IS IN MOVEMENT AND THE GAS GAGE DOESN'T READ THE CORRECT LEVEL OF SHOWING HOW MUCH GAS IS IN VEHICLE. THIS IS A BIG SAFETY ISSUES CAUSE IT HAS ME WORRIED OF NOT KNOWING HOW MUCH GAS I HAVE BEFORE IT RUNS OUT OF GAS RISKING MYSELF AND OTHERS BECAUSE VEHICLE ALL OF A SUDDENNESS LOSES SPEED AND SHUTS DOWN.
Loss of motive power due to engine failure
Loss of Motive Power due to the Battery Energy Control Module
Electric Vehicle Battery Fires
Outboard Front Seat Belt Anchor Cable Failure
Fuel Line Leak
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.