NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports162,000 miles · Jan 18, 2017
Fuel/propulsion System
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE SERVICE ENGINE LIGHT WARNING INDICATOR ILLUMINATED AND THERE WAS AN ABNORMAL FUEL ODOR IN THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE VEHICLE NEEDED A FUEL CAP. THE VEHICLE WAS REPAIRED HOWEVER UPON FURTHER INSPECTIO…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE SERVICE ENGINE LIGHT WARNING INDICATOR ILLUMINATED AND THERE WAS AN ABNORMAL FUEL ODOR IN THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE VEHICLE NEEDED A FUEL CAP. THE VEHICLE WAS REPAIRED HOWEVER UPON FURTHER INSPECTION THE TECHNICIAN INFORMED THE CONTACT THAT THE FUEL HOSE HAD A TEAR AND THE FUEL PUMP MODULE WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE CONTACT REFERENCED NHTSA CAMPAIGN: 09V419000 ( FUEL SYSTEM, GASOLINE) AS A POSSIBLE SOLUTION TO THE FAILURE HOWEVER THE VIN WAS NOT INCLUDED. THE FAILURE MILEAGE WAS APPROXIMATELY 162,000.
NHTSA ODI #10946139
71,050 miles · Jan 11, 2017
Unknown Or Other
INSTRUMENT CLUSTER IS VERY FAULTY. AT TIMES WHEN IT IS HOT OUTSIDE THE BATTERY AND OIL PRESSURE GAUGE WON'T FUNCTION PROPERLY. THE RPM GAUGE WENT OUT AT ONLY 36,000 MILES. I JUST WENT OVER 70,000 MILES RECENTLY AND NOW THE SPEEDOMETER WILL NOT WORK. AS A MATTER OF FACT THE ONLY GAUGE THAT HAS ALWAYS WORKED PROPERLY IS THE FU…
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INSTRUMENT CLUSTER IS VERY FAULTY. AT TIMES WHEN IT IS HOT OUTSIDE THE BATTERY AND OIL PRESSURE GAUGE WON'T FUNCTION PROPERLY. THE RPM GAUGE WENT OUT AT ONLY 36,000 MILES. I JUST WENT OVER 70,000 MILES RECENTLY AND NOW THE SPEEDOMETER WILL NOT WORK. AS A MATTER OF FACT THE ONLY GAUGE THAT HAS ALWAYS WORKED PROPERLY IS THE FUEL GAUGE.
NHTSA ODI #10944401
118,000 miles · Dec 16, 2016
Fuel System, GasolineFuel/propulsion System
AFTER FUELING,WHEN DRIVING AND WHILE STATIONARY THE SMELL OF GAS FUMES INSIDE THE VEHICLE VERY STRONG DIFFICULTYSTARTING AND NOW WONT START AT ALL UPON FURTHER SELF INVESTAGATION FUEL IS COMIMING OUT ON TOP OF FUEL TANKSMALL HOLES SEEM TO EXIST WHERE FUEL IS COMING OUT HOW EVER I CANT GET IN FAR ENOUGH TO SEE THIS WAS DETERMINED…
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AFTER FUELING,WHEN DRIVING AND WHILE STATIONARY THE SMELL OF GAS FUMES INSIDE THE VEHICLE VERY STRONG DIFFICULTYSTARTING AND NOW WONT START AT ALL UPON FURTHER SELF INVESTAGATION FUEL IS COMIMING OUT ON TOP OF FUEL TANKSMALL HOLES SEEM TO EXIST WHERE FUEL IS COMING OUT HOW EVER I CANT GET IN FAR ENOUGH TO SEE THIS WAS DETERMINED BY FEELING AROUND ON THE FUEL TANK.
NHTSA ODI #10935593
126,000 miles · Dec 10, 2016
Electrical System
THE SPEEDOMETER DOES NOT WORK ANYMORE IT WAS SHOWING LOTS FASTER BEFORE, STARING IN FEB 2015 THEN JUST QUITE A FEW MONTHS AGO. THE LIGHTS WILL ALL GO REALLY DIM FOR FEW SECONDS USUALLY WHEN SLOWING DOWN THEN WILL BE NORMAL STARTED ABOUT 3 YEARS AGO.
NHTSA ODI #10934444
131,490 miles · Dec 9, 2016
Air Bags
THE CAR WAS PARKED IN THE DRIVEWAY AT OUR HOME. MY HUSBAND WENT OUT TO START IT AND HE TURNED THE IGNITION KEY AND THE FRONT AIRBAGS EXPLODED ON BOTH SIDES. THE SALESMAN AT MCGRATH CHEVYLAND TOOK PHOTOS. THEY WERE TO GET AHOLD OF US THE EARLY PART OF THIS WEEK AND WE HAVE HEARD NOTHING.
NHTSA ODI #10934275
155,000 miles · Nov 21, 2016
Fuel/propulsion System
LET ME BEGIN WITH STATING THAT MY 2004 TRAILBLAZER HAS HAD ITS SERVICE ENGINE SOON (SES) LIGHT ON FOR WELL OVER A YEAR DUE TO A LARGE EVAP LEAK (CODE P0455). AS A RESULT, I HAVE TAKEN IT TO TWO MECHANICS, HAD THE PURGE SOLENOID VALVE REPLACED TWICE, HAD A PLETHORA OF SMOKE TESTS AND ALL OTHER TESTS DONE, WITH NO RESOLVE. I RECEI…
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LET ME BEGIN WITH STATING THAT MY 2004 TRAILBLAZER HAS HAD ITS SERVICE ENGINE SOON (SES) LIGHT ON FOR WELL OVER A YEAR DUE TO A LARGE EVAP LEAK (CODE P0455). AS A RESULT, I HAVE TAKEN IT TO TWO MECHANICS, HAD THE PURGE SOLENOID VALVE REPLACED TWICE, HAD A PLETHORA OF SMOKE TESTS AND ALL OTHER TESTS DONE, WITH NO RESOLVE. I RECEIVED A LETTER FROM GM (DATED A YEAR BEFORE) JUST A COUPLE WEEKS AGO STATING THAT "SOME 2004 MODEL YEAR CHEVROLET TRAILBLAZER VEHICLES MAY CONTAIN A FUEL TANK INLET CHECK VALVE (ICV) THAT COULD FRACTURE.. A FRACTURED ICV COULD ALLOW FUEL VAPORS TO PASS THROUGH AND DROPLETS OF FUEL TO ACCUMULATE ON THE SIDE OF THE FUEL TANK". THE LETTER GOES ON TO DESCRIBE THAT GM WILL REPAIR THE ICV IF THE CONDITION OCCURS WITHIN 15 YEARS THE VEHICLE WAS ORIGINALLY PLACED IN SERVICE OR 150,000 MILES, WHICHEVER COMES FIRST. MY TRAILBLAZER HAS BEEN IN SERVICE FOR 12 YEARS, HOWEVER I JUST PASSED 155,000 MILES. HAD I BEEN NOTIFIED AROUND THE TIME THE LETTER WAS SUPPOSED TO ARRIVE, I COULD HAVE EASILY TAKEN MY TRAILBLAZER TO THE DEALERSHIP AND HAD THIS REPAIR DONE WITH NO QUALMS. HOWEVER, BECAUSE I HAVE PASSED THE 150,000 MILE MARK, GM REFUSES TO COVER THIS REPAIR. THIS IS EXTREMELY UPSETTING CONSIDERING THE OBVIOUS SAFETY RISK PRESENTED WITH "DROPLETS OF FUEL ACCUMULATING ON THE SIDE OF THE FUEL TANK". WHEN SPEAKING TO A GM REPRESENTATIVE THIS MORNING, I WAS TOLD TO TAKE MY CAR TO A DEALERSHIP AND THIS WOULD BE AN OUT-OF-POCKET EXPENSE. CONSIDERING THE SAFETY ISSUE, I WANT MY TRAILBLAZER TO BE REPAIRED AND COVERED BY GM AS IT SHOULD BE FOR ALL TRAILBLAZER AND ENVOY OWNERS WITH THIS PROBLEM.
NHTSA ODI #10927223
Mileage unknown · Oct 21, 2016
Exterior Lighting
ON JUNE 11 2016 AT 5:00AM WHILE DRIVING MY HEADLIGHTS WENT OUT, I USED MY HIGH BEAM TO RETURN HOME FROM BY PASS HIGHWAY 15MILES. ONCE HOME TRIED THE MANUAL SWITCH TO SEE IF LIGHTS WOULD COME ON . NO LOW BEAM BUT HIGH BEAM WORKED. COUPLE OF DAYS LATER AT DEALERSHIP THEY COULD NOT FIND ANYTHING. I NOTICE ON OCCASION THE LOW BEAMS…
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ON JUNE 11 2016 AT 5:00AM WHILE DRIVING MY HEADLIGHTS WENT OUT, I USED MY HIGH BEAM TO RETURN HOME FROM BY PASS HIGHWAY 15MILES. ONCE HOME TRIED THE MANUAL SWITCH TO SEE IF LIGHTS WOULD COME ON . NO LOW BEAM BUT HIGH BEAM WORKED. COUPLE OF DAYS LATER AT DEALERSHIP THEY COULD NOT FIND ANYTHING. I NOTICE ON OCCASION THE LOW BEAMS WERE NOT ON WHEN DRIVING WITH THE DAYLIGHT RUNNING LIGHTS WHEN I PULL BEHIND A CAR I WOULD SWITCH TO HIGH BEAM WHICH DID WORK. ON 18OCT 2016 TIME 7:45 THE LIGHTS LOW BEAM DID NOT COME ON WHEN STARTING MY TRUCK. I TRIED THE HIGH BEAM AND IT WORKED. HAD TO DRIVE 10 MILES ON CITY STREET TO GET HOME ON HIGH BEAM. AFTER GETTING HOME I PLAYED WITH SWITCH SWITCHING FROM MANUALLY TO RUNNING THE LOW BEAM CAME ON AFTE I TURNED THE CAR OFF AND BACK ON WITH LIGHT ON THE MANUALLY POSITION. PLEASE HELP DEALER CAN'T FIND THE ISSUE OR DUPLICATE IT NEITHER CAN I.. I TRAVEL ALONE AND FEMALE I CAN'T HAVE THIS HAPPENING. I HAVE TO GET REPAIRED. ON.
NHTSA ODI #10917965
190,000 miles · Sep 28, 2016
Structure
TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35 MPH, AN ABNORMAL NOISE WAS HEARD FROM THE REAR OF THE VEHICLE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FRAME WAS RUSTED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIF…
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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35 MPH, AN ABNORMAL NOISE WAS HEARD FROM THE REAR OF THE VEHICLE. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE FRAME WAS RUSTED 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. THE VIN WAS NOT PROVIDED.
NHTSA ODI #10910284
185,600 miles · Aug 25, 2016
Electrical System
OIL PRESSURE GAUGE DROPS TO ZERO CAUSING "CHECK GAUGES" LIGHT TO COME ON AND ENGINE TO STALL WHEN THE A/C IS RUNNING AND AM STOPPED AT A LIGHT IN THE CITY. THIS ONLY OCCURS ONCE DURING A TRIP OR ONCE A MONTH. UNDERSTAND THAT TRAILBLAZERS HAVE A HISTORY OF GAUGE PROBLEMS AND ELECTRICAL ISSUES. CHEVROLET NEEDS TO ISSUE A RECALL…
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OIL PRESSURE GAUGE DROPS TO ZERO CAUSING "CHECK GAUGES" LIGHT TO COME ON AND ENGINE TO STALL WHEN THE A/C IS RUNNING AND AM STOPPED AT A LIGHT IN THE CITY. THIS ONLY OCCURS ONCE DURING A TRIP OR ONCE A MONTH. UNDERSTAND THAT TRAILBLAZERS HAVE A HISTORY OF GAUGE PROBLEMS AND ELECTRICAL ISSUES. CHEVROLET NEEDS TO ISSUE A RECALL FOR ELECTRICAL WIRING/GAUGES.
NHTSA ODI #10898515
131,000 miles · Aug 10, 2016
Electrical System
WHEN TURNING THE IGNITION SWITCH OFF FROM THE RUN POSITION WHILE IN PARK, THE SWITCH SLIPS INTO THE ACCESSORIES POSITION WITH NO EFFORT TO TURN THE KEY. TRUCK WILL NOT TURN OFF OF ASSESORIY POSITION UNTIL I WIGGLE THE KEY FOR A WHILE. THE KEY CAN BE REMOVED AFTER TURNING OFF TRUCK BUT REMAINS ON ASSESORY. HAPPENS EVERY TIME. BEE…
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WHEN TURNING THE IGNITION SWITCH OFF FROM THE RUN POSITION WHILE IN PARK, THE SWITCH SLIPS INTO THE ACCESSORIES POSITION WITH NO EFFORT TO TURN THE KEY. TRUCK WILL NOT TURN OFF OF ASSESORIY POSITION UNTIL I WIGGLE THE KEY FOR A WHILE. THE KEY CAN BE REMOVED AFTER TURNING OFF TRUCK BUT REMAINS ON ASSESORY. HAPPENS EVERY TIME. BEEN DOING THIS FOR A WEEK NOW.[8-03-16 TO PRESENT]
NHTSA ODI #10894899
NHTSA investigations
4RQ17002 · Loss Of Headlights
Opened Apr 24, 2017 · Closed Mar 29, 2021
Status: closed (inferred from source dates) · Exterior Lighting:headlights
The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac Grand Prix. This scope includes the Trailblazer/Envoy variants: 2002-2006 Envoy XL/Trailblazer EXT and 2004-2005 Envoy XUV. The original scope of this investigation was expanded to include all vehicles equipped with the subject Headlight Driver Module (HDM). The focus of the investigation was to determine whether actions performed by General Motors adequately addressed any unreasonable risk to motor vehicle safety in the subject vehicles concerning the headlights and the HDM that controls them.Under normal electrical load and environmental conditions, the HDM can overheat inside the Underhood Electrical Center (UEC). This can cause the module to fail and result in a simultaneous loss of both low beam headlights and both daytime running lights (DRLs), often with no warning or prior detectability to the driver. This failure can be intermittent or permanent. No other exterior lights are affected. High beams, turn signals, brake lights, and reverse lights are still operational.General Motors addressed this issue with 2 recalls (14V755 & 15V519) and a special coverage program (N172091910). In view of the recalls and special coverage program implemented by GM and the vehicle high beams continuing to operate, ODI has tentatively concluded that the actions taken by GM mitigate any unreasonable risk to safety posed by HDM failure in the subject vehicles.Accordingly, the investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.
EA07009 · Fuel Pump Module Leaks Gasoline
Opened Jul 10, 2007 · Closed Aug 28, 2008
Status: closed (inferred from source dates) · Fuel System, Gasoline:delivery:fuel Pump
DURING THE COURSE OF THIS EA INVESTIGATION, ODI OBSERVED THAT THE MAJORITY OF THE COMPLAINTS (88%) AND WARRANTY CLAIMS (94%) WERE REPORTED FOR VEHICLES THAT ARE REGISTERED FOR USE IN THE SALT BELT REGION OF THE US.THIS AREA INCLUDES 20 STATES IN THE NORTHEAST, MID ATLANTIC AND THE MIDWEST REGIONS AND THE DISTRICT OF COLUMBIA.CONSUMERS IN THE SALT BELT REGION REPORTED TO ODI THAT THEY COULD SMELL FUEL VAPORS IN THEIR VEHICLES WHILE DRIVING.UPON FURTHER EXAMINATION OF THEIR VEHICLES, THEY DISCOVERED THAT FUEL VAPORS WERE COMING OUT OF THE TOP OF THE FUEL TANK. THIS CONDITION IS CAUSED BY CORROSION OF THE RETURN AND SENDER LINES OF THE FUEL PUMP MODULE.WATER AND ROAD SALT COLLECT ON TOP OF THE FUEL PUMP LEADING TO SMALL PINHOLES APPEARING ON THE FUEL LINES.FUEL MAY LEAK AND COLLECT ON TOP OF THE MODULE AND/OR SPILL ONTO THE GROUND.THE DATA EVALUATED UNDER THIS INVESTIGATION REFLECT A RELATIVELY LOW FREQUENCY OF OCCURRENCE THAT LARGELY ARISES IN SALT BELT STATES.GM HAS EXTENDED THE WARRANTY ON THE SUBJECT COMPONENT TO TEN YEARS OR 120,000 MILES.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED AT THIS TIME; ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION SELECT DOCUMENT SEARCH.
EA04021 · Brake Lamp Failure
Opened Aug 3, 2004 · Closed Nov 4, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
GM STATES THAT SOME BRAKE/TAIL LAMP BULBS CAN PREMATURELY BECOME INOPERATIVE DUE TO MALFUNCTIONING BRAKE/TAIL LAMP SOCKETS.ON MARCH 2, 2004, GM INITIATED A 6-YEAR/72,000 MILE SPECIAL POLICY FOR 989,487 SUBJECT VEHICLES TO INSPECT AND REPLACE THE REAR BRAKE/TAIL LAMP BULB SOCKET ASSEMBLIES.ON APRIL 4, 2004, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION (PE04-032) BASED ON CONSUMER COMPLAINTS ALLEGING BRAKE LIGHTS NOT OPERATING WHEN THE BRAKE PEDAL IS DEPRESSED.ON AUGUST 3, 2004 ODI UPGRADED PE04-032 TO AN ENGINEERING ANALYSIS (EA04-021).BY LETTER DATED OCTOBER 27, 2004 GM NOTIFIED NHTSA THAT IT WILL CONDUCT A SAFETY RECALL (NHTSA # 04V527) COVERING SUBJECT VEHICLES THAT WERE NOT ALREADY REPAIRED UNDER GM'S SPECIAL POLICY.MY 2004 SUBJECT VEHICLES BUILT AFTER AUGUST 8, 2003 CONTAIN IMPROVED BRAKE LAMP ASSEMBLIES AND ARE NOT INCLUDED IN THE RECALL.GM DEALERS WILL INSTALL THE IMPROVED BRAKE LAMP ASSEMBLY ON SUBJECT VEHICLES BUILT ON AUGUST 8, 2003 AND EARLIER.THE ACTION TAKEN BY GM IS SUFFICIENT TO RESOLVE THE ISSUES RAISED BY THIS INVESTIGATION.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.
PE04032 · Brake Lamp Failure
Opened Apr 6, 2004 · Closed Aug 3, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION ON MODEL YEAR (MY) 2002-04 CHEVROLET TRAILBLAZER VEHICLES.GM REPORTS THAT OTHER VEHICLES SHARING THIS PLATFORM AND BRAKE LAMP DESIGN ARE THE MY 2002-2004 CHEVROLET TRAILBLAZER EXT; GMC ENVOY, XL, XUV; OLDSMOBILE BRAVADA AND 2004 BUICK RAINIER.COMPLAINTS ALLEGE THAT THE REAR BRAKE LAMP DOES NOT OPERATE WHEN THE BRAKE PEDAL IS DEPRESSED.THERE IS NO INDICATION TO THE DRIVER FROM INSIDE THE VEHICLE THAT ONE OR MORE BRAKE LAMPS BULBS ARE NOT FUNCTIONING.GM FOUND THAT HEAT FROM THE BULB COULD DEFORM THE LAMP SOCKET, PRODUCE ELECTRICAL ARCING AND AN INOPERATIVE BULB.TO CORRECT THE CONDITION, GM CHANGED THE BULB TO A BULB THAT TRANSMITS LESS HEAT TO THE SOCKET AND CHANGED THE SOCKET TO A THERMOPLASTIC POLYMER TO IMPROVE THERMAL STABILITY.THESE CHANGES WERE IMPLEMENTED INTO PRODUCTION VEHICLES ON OCTOBER 1, 2003.GM IMPLEMENTED A SPECIAL POLICY BY NOTIFYING CONSUMERS THAT IF THEY SHOULD EXPERIENCE A BRAKE LAMP FAILURE TO GO TO THEIR GM DEALERSHIP TO HAVE THE CIRCUIT BOARD CONTAINING THE BRAKE LAMP REPLACED ALONG WITH NEW BULBS.THIS POLICY IS GOOD FOR THE FIRST 6 YEARS OR 72,000 MILES OF THE LIFE OF THE VEHICLE.ODI WILL UPGRADE THIS INVESTIGATION TO EA 04-021 AND INCLUDE THE ABOVE MENTIONED VEHICLES.
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