NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports60,000 miles · Sep 29, 2008
Engine And Engine Cooling
MY 2004 TRAILBLAZER HAS BEEN HESITATING AND STALLING FOR ABOUT A YEAR AND A HALF. THIS OCCURS DAILY SOMETIMES SEVERAL TIMES A DAY. THERE ARE TIMES THE VEHICLE STALLS AND DIES. NO ONE HAS BEEN ABLE TO DETERMINE THE CAUSE. ABOUT SIX MONTHS AGO THE HEADLIGHTS QUIT. SINCE HAS BEEN REPAIRED. LAST WEEK THE DASH BOARD INSTRUMENTS QUIT …
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MY 2004 TRAILBLAZER HAS BEEN HESITATING AND STALLING FOR ABOUT A YEAR AND A HALF. THIS OCCURS DAILY SOMETIMES SEVERAL TIMES A DAY. THERE ARE TIMES THE VEHICLE STALLS AND DIES. NO ONE HAS BEEN ABLE TO DETERMINE THE CAUSE. ABOUT SIX MONTHS AGO THE HEADLIGHTS QUIT. SINCE HAS BEEN REPAIRED. LAST WEEK THE DASH BOARD INSTRUMENTS QUIT WORKING, FUEL GUAGE AS WELL. *TR
NHTSA ODI #10243945
Mileage unknown · Sep 24, 2008
Structure
I PURCHASED THIS VEHICLE IN FEB 2008. I OPENED THE HATCH FOR THE FIRST TIME AND WHEN I LIFTED THE HATCH, I BEGAN TO HEAR A LOT OF BREAKING AND BOLTS FLYING. I GOT IT TO CLOSE SECURELY AND DIDN'T HAVE ANY PROBLEMS. THEN ONE DAY, I WAS DRIVING MY TRUCK AND THE BACK HATCH BEGAN TO SHAKE. I CONTINUE TO DRIVE THE VEHICLE. AFTER DRIVI…
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I PURCHASED THIS VEHICLE IN FEB 2008. I OPENED THE HATCH FOR THE FIRST TIME AND WHEN I LIFTED THE HATCH, I BEGAN TO HEAR A LOT OF BREAKING AND BOLTS FLYING. I GOT IT TO CLOSE SECURELY AND DIDN'T HAVE ANY PROBLEMS. THEN ONE DAY, I WAS DRIVING MY TRUCK AND THE BACK HATCH BEGAN TO SHAKE. I CONTINUE TO DRIVE THE VEHICLE. AFTER DRIVING FOR ANOTHER FEW MINUTES THE HATCH BEGAN TO FALL BACKWARD. I NEVER REACH THE GROUND, IT WAS HELD ON BY THE LIGHTS THAT CONNECT THE TOP LIGHT. I WENT TO A DEALER THAT REPAIRED IT SUPPOSEDLY. A FEW DAYS LATER IT DONE THE SAME THING. I ATTEMPTED TO GET IT REPAIR A SECOND TIME. IT WASN'T SUCCESSFUL EITHER. THIS TIME I COULDN'T GET IT CLOSED. I WAS TOLD IT WAS A PROBLEM AMONGST A FEW TRAILBLAZER BY MY INSURANCE COMPANY. NOTHING HAS BEEN DONE AS OF YET. THE ONLY SOLUTION THAT I WAS TOLD THAT MAY HELP THE PROBLEM IS PAYING $1,100 TO BUY ANOTHER. ACCORDING TO A LOCAL DEALER THE WINDOW DOESN'T BELONG IN THE VEHICLE. THE WHOLE SET UP IS NOT THE WAY IT SHOULD BE SET UP. MY VEHICLE HAS A BRACKET HOLDING THE WINDOW UP BUT THERE ISN'T A BRACKET ON ANY WEBSITE. *TR
NHTSA ODI #10243369
Mileage unknown · Sep 15, 2008
Electrical System
I WAS DRIVING TO WORK ONE MORNING AND NOTICE THAT MY SPEEDOMETER IN MY 2004 CHEVY TRAILBLAZER APPEARED TO BE MALFUNCTIONING. I GOT TO A STOP SIGN AND STOPPED. MY SPEEDOMETER ONLY WENT DOWN TO 30 NEVER DOWN TO ZERO AT A COMPLETE STOP. AS I STARTED THROUGH A INTERSECTION MY SPEEDOMETER WENT FROM 30 TO A 120 ON A RURAL COUNTRY R…
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I WAS DRIVING TO WORK ONE MORNING AND NOTICE THAT MY SPEEDOMETER IN MY 2004 CHEVY TRAILBLAZER APPEARED TO BE MALFUNCTIONING. I GOT TO A STOP SIGN AND STOPPED. MY SPEEDOMETER ONLY WENT DOWN TO 30 NEVER DOWN TO ZERO AT A COMPLETE STOP. AS I STARTED THROUGH A INTERSECTION MY SPEEDOMETER WENT FROM 30 TO A 120 ON A RURAL COUNTRY ROAD. AT THE NEXT STOP SIGN THE SPEEDOMETER STAYED AT 120. AS I PROCEEDED, THE SPEEDOMETER WENT COMPLETELY AROUND AND STOPPED WHERE THE TRIP MILES ARE LOCATED. I NEVER KNEW THROUGH THE REST OF MY TRIP TO WORK EXACTLY HOW FAST I WAS REALLY GOING. *TR
NHTSA ODI #10242200
40,000 miles · Sep 12, 2008
Fuel System, Gasoline
2004 CHEVY TRAILBLAZER IS LEAKING FUEL. A 3RD PARTY (NON-GM) MECHANIC DIAGNOSED THE PROBLEM AS A CRACK IN THE GAS TANK. ACCORDING TO THE MECHANIC, THE VEHICLE WAS LEAKING FUEL ONTO THE FLOOR OF HIS SHOP. *TR
NHTSA ODI #10242032
Mileage unknown · Sep 9, 2008
Electrical System
SPEEDOMETER NOT FUNCTIONING PROPERLY, IT SHOWED I WAS DOING 35 MPH SITTING AT A STOP LIGHT. I HAD TO TURN THE VEHICLE OFF AND ON TO GET THE SPEEDOMETER TO DROP BACK DOWN, WHICH IT DID IN 5MPH INCREMENTS. I ALSO HAVE PROBLEMS WITH THE GAS GAUGE SHOWING EMPTY WHEN IT IS FULL. *TR
NHTSA ODI #10241422
66,586 miles · Sep 2, 2008
Air BagsCrashInjury
SLIGHTLY TURNED STEERING WHEEL TO LEFT TO AVOID ANOTHER MOTORIST IN FRONT OF ME. ATTEMPTED TO STRAIGHTEN OUT THE VEHICLE, VEHICLE OVER-CORRECTED SEVERELY, UNABLE TO BRAKE, VEHICLE SLAMMED HEAD-ON INTO CONCRETE HIGHWAY BARRIER 45-60MPH, AIR BAGS FAILED TO DEPLOY. DRIVER WAS WEARING SEATBELT, SUBSTANTIAL BRUISING & NECK/BACK I…
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SLIGHTLY TURNED STEERING WHEEL TO LEFT TO AVOID ANOTHER MOTORIST IN FRONT OF ME. ATTEMPTED TO STRAIGHTEN OUT THE VEHICLE, VEHICLE OVER-CORRECTED SEVERELY, UNABLE TO BRAKE, VEHICLE SLAMMED HEAD-ON INTO CONCRETE HIGHWAY BARRIER 45-60MPH, AIR BAGS FAILED TO DEPLOY. DRIVER WAS WEARING SEATBELT, SUBSTANTIAL BRUISING & NECK/BACK INJURY. *TR
NHTSA ODI #10240623
Mileage unknown · Sep 1, 2008
Electrical System
THE SPEEDOMETER IN MY 04 TRAILBLAZER STARTED ACTING CRAZY. ONE MINUTE IT WAS READING FINE, THEN SAID I WAS GOING 100 MPH. I HAVE TALKED WITH THE DEALERSHIP, BUT ALL THEY HAVE TO SAY IS THAT THEY ARE AWARE OF THE PROBLEM, BUT NO RECALLS YET. I HAVE TRIED CONTACTING GM ON THIS PROBLEM BUT SEEM TO GET NO WHERE. THE SERVICE GUY …
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THE SPEEDOMETER IN MY 04 TRAILBLAZER STARTED ACTING CRAZY. ONE MINUTE IT WAS READING FINE, THEN SAID I WAS GOING 100 MPH. I HAVE TALKED WITH THE DEALERSHIP, BUT ALL THEY HAVE TO SAY IS THAT THEY ARE AWARE OF THE PROBLEM, BUT NO RECALLS YET. I HAVE TRIED CONTACTING GM ON THIS PROBLEM BUT SEEM TO GET NO WHERE. THE SERVICE GUY AT THE DEALERSHIP SAID THEY WOULD FIX IT, BUT I WOULD HAVE TO PAY THE HEFTY 500-600 BILL. WITH ALL THE COMPLAINTS THAT ARE OUT THERE, I FEEL THAT GM SHOULD DO SOMETHING ABOUT THIS. WHY ARE THEY BEING LAZY? SOMEONE COULD REALLY GET HURT, OR EVEN GET TICKETED FOR NOT KNOWING HOW FAST THEY ARE GOING. I HAVE BEEN DRIVING MY TRUCK LIKE THIS SINCE MARCH 08. *TR
NHTSA ODI #10240555
300 miles · Aug 31, 2008
Vehicle Speed Control
WHILE CRUISE CONTROL IS ENGAGED, ENGINE STUTTERS AFTER CRESTING A HILL, MORE OR LESS COASTING DOWN THE OTHER SIDE. *TR
NHTSA ODI #10240366
32,000 miles · Aug 29, 2008
Electrical SystemEngine And Engine Cooling
I PURCHASED A USED 2004 CHEVY TRAILBLAZER IN FEBRUARY 08. IT ONLY HAD 23,000 MILES ON IT. WITH IN THE FIRST 2 WEEKS I HAD IT MY GAUGES STARTED GOING CRAZY. THEY WERE JUMPING AROUND ALL OVER THE PLACE. I TOOK IT BACK TO THE DEALER TO HAVE IT FIXED AND THEY TRIED TO CHARGE ME. FORTUNATELY I MUST HAVE COMPLAINED ENOUGH AND TO THE R…
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I PURCHASED A USED 2004 CHEVY TRAILBLAZER IN FEBRUARY 08. IT ONLY HAD 23,000 MILES ON IT. WITH IN THE FIRST 2 WEEKS I HAD IT MY GAUGES STARTED GOING CRAZY. THEY WERE JUMPING AROUND ALL OVER THE PLACE. I TOOK IT BACK TO THE DEALER TO HAVE IT FIXED AND THEY TRIED TO CHARGE ME. FORTUNATELY I MUST HAVE COMPLAINED ENOUGH AND TO THE RIGHT PERSON BECAUSE IT WAS REPLACED AT NO CHARGE TO MY SELF. I NOW AM HAVING MAJOR PROBLEMS WITH IT STALLING AND TRYING TO STALL. AFTER SEARCHING THE INTERNET I SEE THAT I AM NOT ALONE THERE ARE HUNDREDS OF COMPLAINTS ABOUT THIS PROBLEM. EVERYDAY UPON START UP IT IDLES VERY ROUGH AND IT TRIES TO STALL FOR A GOOD 10 MINUTES. IF I DON'T LET IT SIT AND IDLE BEFORE I DRIVE IT TENDS TO STALL. MY CHECK ENGINE LIGHT WILL FLICKER AT LEAST ONCE A DAY AND EVERY FEW DAYS MY REDUCED ENGINE POWER LIGHT WILL FLICKER. I DO NOT FEEL SAFE ANYMORE. WHAT IF I AM TRAVELING AND MY CAR STALLS AND I LOSE CONTROL AND FROM READING THE OTHER COMPLAINTS I AM AT RISK FOR MY AIR BAGS NOT DEPLOYING. IF IT IS A PROBLEM WITH THE PCM, I DON'T HAVE THE MONEY TO FIX IT!!!!! WHY SHOULD I HAVE TOO? I SEE THAT I AM NOT ALONE WITH THIS PROBLEM. WHY IS THEIR NOTHING BEING DONE ABOUT IT? WHY SHOULD US AS CONSUMER ALREADY PAYING ENOUGH FOR THESE VEHICLES BE RESPONSIBLE FOR THEIR MISTAKES? *TR
NHTSA ODI #10240160
78,000 miles · Aug 25, 2008
Fuel System, Gasoline
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE ON THE INSTRUMENT PANEL NO LONGER WORKS. SHE DOES NOT KNOW WHEN TO PLACE FUEL IN THE VEHICLE. THE FAILURE HAS NOT BEEN REPAIRED. THE CURRENT MILEAGE WAS 80,000 AND FAILURE MILEAGE WAS 78,000.
NHTSA ODI #10239631
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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