NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reportsMileage unknown · Feb 7, 2007
Electrical System
ODOMETER FAILURE AFTER 81,000 MILES... ODOMETER WILL LOCK ON DIFFERENT SPEEDS, FROM 10-40- 110 MPH EVEN THOUGH I AM NOT TRAVELING THAT SPEED. MY MECHANIC SAYS THAT THIS PART NEEDS TO BE RECALLED BECAUSE HE HAS HAD TO REPLACE SO MANY CHEVROLET TAHOE AND TRAILBLAZERS WITH THE SAME PROBLEM. THIS PART CAN RUN OVER $300.00 SOMETIM…
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ODOMETER FAILURE AFTER 81,000 MILES... ODOMETER WILL LOCK ON DIFFERENT SPEEDS, FROM 10-40- 110 MPH EVEN THOUGH I AM NOT TRAVELING THAT SPEED. MY MECHANIC SAYS THAT THIS PART NEEDS TO BE RECALLED BECAUSE HE HAS HAD TO REPLACE SO MANY CHEVROLET TAHOE AND TRAILBLAZERS WITH THE SAME PROBLEM. THIS PART CAN RUN OVER $300.00 SOMETIMES. *JB
NHTSA ODI #10181879
68,000 miles · Feb 7, 2007
Power Train
WE BOUGHT A 2004 CHEVY TRAILBLAZER BRAND NEW. WE HAD ALL SCHEDULED MAINTENANCE PERFORMED. THEN IN DECEMBER 29TH OF 2006 IN THE EVENING WE EXPERIENCED A LOSS OF THE TRANSMISSION IN THIRD GEAR. WE WERE TRYING TO MERGE ONTO A HIGHWAY AND WERE ALMOST REAR ENDED BY A SEMI-TRACTOR TRAILER TRUCK. I QUICKLY PULLED OFF TO THE BREAK DOWN …
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WE BOUGHT A 2004 CHEVY TRAILBLAZER BRAND NEW. WE HAD ALL SCHEDULED MAINTENANCE PERFORMED. THEN IN DECEMBER 29TH OF 2006 IN THE EVENING WE EXPERIENCED A LOSS OF THE TRANSMISSION IN THIRD GEAR. WE WERE TRYING TO MERGE ONTO A HIGHWAY AND WERE ALMOST REAR ENDED BY A SEMI-TRACTOR TRAILER TRUCK. I QUICKLY PULLED OFF TO THE BREAK DOWN LANE TO AVERT AN ACCIDENT. IT HAS BEEN ROUGHLY BEEN SIX WEEKS SINCE WE DROPPED THE VEHICLE OFF AT A AUTHORIZED CHEVY DEALER. OUR EXTENDED WARRANTY WANTS TO REBUILD THE TRANSMISSION. THE CHEVY SERVICE DEPARTMENT WANTS TO REPLACE IT. THEY ARE AT A STALEMATE. THIS VEHICLE HAD ONLY 68000 MILES ON IT. *JB
NHTSA ODI #10181848
15,000 miles · Feb 6, 2007
Electrical System
SPEEDOMETER SUDDENLY STARTED READING RANDOMLY, USUALLY 10-15 MPH TOO HIGH. INTERMITTENT. *JB
NHTSA ODI #10181797
41,466 miles · Jan 31, 2007
Vehicle Speed ControlCrash
WHILE MAKING A LEFT TURN, THE VEHICLE ACCELERATED FROM 5 TO 50 MPH, FULL PRESSURE APPLIED TO THE BRAKES DID NOT STOP THE VEHICLE. DRIVING INTO A CURB WAS THE ONLY WAY TO STOP THE VEHICLE. RESULTING IN TIRE AND WHEEL DAMAGE. NO PERSONAL INJURY WAS CAUSED. *NM
NHTSA ODI #10181219
34,000 miles · Jan 28, 2007
Electrical System
DASH WARNING LIGHTS COME ON/STAY ON/GO OFF RANDOMLY. ADDITIONALLY, ON FOUR SEPARATE OCCASIONS, DECREASED ENGINE POWER HAS OCCURRED. SHUTTING VEHICLE DOWN WITH A RESTART HAS ALWAYS SOLVED THE "DECREASED POWER" ISSUE. BUT DEALERSHIP & AN INDEPENDENT GARAGE CANNOT FIX DUE TO "NO CODES STORED". WARNING LIGHT INVOLVED ARE: SERVIC…
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DASH WARNING LIGHTS COME ON/STAY ON/GO OFF RANDOMLY. ADDITIONALLY, ON FOUR SEPARATE OCCASIONS, DECREASED ENGINE POWER HAS OCCURRED. SHUTTING VEHICLE DOWN WITH A RESTART HAS ALWAYS SOLVED THE "DECREASED POWER" ISSUE. BUT DEALERSHIP & AN INDEPENDENT GARAGE CANNOT FIX DUE TO "NO CODES STORED". WARNING LIGHT INVOLVED ARE: SERVICE ENGINE SOON, OIL CHANGE DUE AND REDUCED POWER. THIS IS AN ONGOING PROBLEM HAVING STARTED ALMOST AS SOON AS WE TOOK DELIVERY OF VEHICLE NEW WITH 250 MILES .*JB
NHTSA ODI #10180918
Mileage unknown · Jan 17, 2007
Service Brakes, Hydraulic
OCTOBER 5, 2005 I BOUGHT A 2004 CHEVY TRAILBLAZER. AT TIME OF PURCHASE, I WAS OFFERED A TIRES FOR LIFE DEAL. ALL THAT WAS REQUIRED OF ME WAS TO HAVE THE MAINTENANCE DONE AT CHEVY AND TO HAVE TIRE ROTATIONS AND OIL CHANGES EVERY 3000 MILES. I HAVE BEEN DOING THIS. LAST OIL CHANGE AND ROTATION ON JAN 8, THEY TOLD ME I NEEDED FR…
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OCTOBER 5, 2005 I BOUGHT A 2004 CHEVY TRAILBLAZER. AT TIME OF PURCHASE, I WAS OFFERED A TIRES FOR LIFE DEAL. ALL THAT WAS REQUIRED OF ME WAS TO HAVE THE MAINTENANCE DONE AT CHEVY AND TO HAVE TIRE ROTATIONS AND OIL CHANGES EVERY 3000 MILES. I HAVE BEEN DOING THIS. LAST OIL CHANGE AND ROTATION ON JAN 8, THEY TOLD ME I NEEDED FRONT BRAKES. 57,500 MILES ON VEHICLE. I SAID OKAY AND SET UP AN APPOINTMENT FOR JAN.15. AT THAT TIME, THEY TOLD ME I WOULD NEED NEW ROTORS ALSO. AT THIS POINT I WAS STARTING TO MISTRUST THE SERVICE DEPARTMENT. THEY PUT MY VEHICLE BACK TOGETHER AND I WENT TO BIG O TIRES FOR A SECOND OPINION. UPON THEIR CHECKING MY VEHICLE, THEY FOUND ALL FOUR ROTORS TO BE BAD! IT APPEARS TO BE A MANUFACTURERS DEFECT. THE MANUFACTURER IS USING A DEFECTIVE METAL TO MAKE THE ROTORS. BIG O CLAIMS THAT IT IS A POTENTIAL LAW SUIT AND THEY SHOULD DO A RECALL. THEY HAVE HAD NUMEROUS CASES COME IN LIKE MINE NOT ONLY ON THE TRAILBLAZER BUT OTHER CHEVY TRUCKS AND SUV'S. THE BRAKES WEREN'T ACTUALLY WORE THAT BAD BUT ALL FOUR ROTORS WERE RUSTED AND PITTED. THESE ROTORS HAD NEVER BEEN TURNED THEY STILL HAD MANUFACTURER CLIPS ON THEM. IT WAS DEFINITELY A SIGN OF POOR QUALITY PARTS NOT REGULAR WEAR AND TEAR. ALSO, CHEVY MAKES ME WONDER WHY THEY DID NOT NOTICE THIS EARLIER? I HAVE BEEN IN THEIR SHOP EVERY 3000 MILES FOR ROTATION, THEY SHOULD HAVE NOTICED THIS RIGHT AWAY. IT IS AS IF THEY WERE TRYING TO HIDE SOMETHING. HERE IN 2 WEEKS I WILL BE GETTING NEW FRONT ROTORS AND BRAKES. THEN AS SOON AS I CAN AFFORD IT I AM GOING TO GET THE BACK ROTORS REPLACED. BUT THIS COULD PROVE TO BE DANGEROUS TO MANY PEOPLE AND SHOULD BE LOOKED INTO. THANK YOU FOR YOUR TIME AND CONSIDERATION. *NM
NHTSA ODI #10178893
33,000 miles · Jan 16, 2007
Air BagsCrashInjury
TL* - THE CONTACT STATED THAT ON 1/13/07 HE CRASHED INTO ANOTHER VEHICLE WITH HIS 2004 CHEVROLET TRAILBLAZER. THE ODOMETER READ 33,000 MILES AT THE TIME OF THE CRASH. HE WAS DRIVING AT 45 MPH AND COLLIDED WITH THE SECOND VEHICLE IN A PERPENDICULAR ANGLE "T-BONE" STRIKING IT ON THE SIDE AS IT CROSSED IN FRONT OF HIM. THE DRIV…
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TL* - THE CONTACT STATED THAT ON 1/13/07 HE CRASHED INTO ANOTHER VEHICLE WITH HIS 2004 CHEVROLET TRAILBLAZER. THE ODOMETER READ 33,000 MILES AT THE TIME OF THE CRASH. HE WAS DRIVING AT 45 MPH AND COLLIDED WITH THE SECOND VEHICLE IN A PERPENDICULAR ANGLE "T-BONE" STRIKING IT ON THE SIDE AS IT CROSSED IN FRONT OF HIM. THE DRIVER WAS THE ONLY OCCUPANT IN THE VEHICLE AND THE DRIVER'S SIDE AIRBAG NEVER DEPLOYED. THERE WERE 5 PEOPLE INJURED IN THE SECOND VEHICLE. *NM
NHTSA ODI #10178863
Mileage unknown · Jan 15, 2007
Electrical SystemExterior Lighting
HEADLIGHTS BLINK WHILE DRIVING AND SPEEDOMETER AND TACHOMETER STOPPED WORKING. *JB
NHTSA ODI #10178771
71,300 miles · Jan 11, 2007
Power Train
WE BOUGHT OUR 04 TRAILBLAZER USED ABOUT A YEAR AND A HALF AGO. IT WAS OWNED BY ENTERPRISE BEFORE AND THEREFORE ALREADY HAD 30000 MILES ON IT BUT WE KNEW THAT IT WAS MAINTAINED WELL. IT IS NOW AT 71000 MILES AND WE HAVE DONE ALL RECOMMENDED MAINTENANCE. YESTERDAY, WHILE ON THE INTERSTATE THE TRANSMISSION LOST THIRD GEAR AND ABOVE…
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WE BOUGHT OUR 04 TRAILBLAZER USED ABOUT A YEAR AND A HALF AGO. IT WAS OWNED BY ENTERPRISE BEFORE AND THEREFORE ALREADY HAD 30000 MILES ON IT BUT WE KNEW THAT IT WAS MAINTAINED WELL. IT IS NOW AT 71000 MILES AND WE HAVE DONE ALL RECOMMENDED MAINTENANCE. YESTERDAY, WHILE ON THE INTERSTATE THE TRANSMISSION LOST THIRD GEAR AND ABOVE. THIS WAS DANGEROUS BUT LUCKILY I GOT OFF OF THE INTERSTATE WITH NO INCIDENCE. THIS MORNING WE TOOK THE TRUCK TO OUR LOCAL AND TRUSTED MECHANIC WHO DETERMINED THAT THE TRANSMISSION WAS SHOT. HE CALLED JASPER TO GET A PRICE ON A NEW TRANSMISSION AND DURING THAT CONVERSATION, JASPER INFORMED HIM THAT THEY HAVE DONE 15 UPGRADES TO THIS PARTICULAR GM TRANSMISSION AND THAT EVEN GM IS BUYING REPLACEMENT TRANSMISSIONS FROM THEM. I THINK THAT GM SHOULD CONSIDER SOME TYPE OF RECALL ON THE TRANSMISSIONS DUE TO THE OBVIOUS AMOUNT OF PROBLEMS THEY ARE CAUSING. NEEDLESS TO SAY.. MY WARRANTY IS EXPIRED AND I HAVE TO SHELL OUT $3000 TO REPAIR A 3 YR OLD VEHICLE. *JB
NHTSA ODI #10178417
42,000 miles · Jan 10, 2007
Engine And Engine CoolingPower Train
TL* - SOMETIME IN LATE SEPTEMBER 2006, WHILE DRIVING AT 65 MPH THE TRANSMISSION BEGAN TO SLIP. THE VEHICLE SOUNDED AS IF IT WANTED TO ACCELERATE, BUT COULDN'T. THE CONTACT'S VEHICLE CONTINUED TO HAVE THE FAILURE FOR ABOUT 10 SECONDS. THE VEHICLE ALSO HAD THE SAME TYPE OF FAILURE WHILE AT A STOP LIGHT. WHILE TRYING TO A…
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TL* - SOMETIME IN LATE SEPTEMBER 2006, WHILE DRIVING AT 65 MPH THE TRANSMISSION BEGAN TO SLIP. THE VEHICLE SOUNDED AS IF IT WANTED TO ACCELERATE, BUT COULDN'T. THE CONTACT'S VEHICLE CONTINUED TO HAVE THE FAILURE FOR ABOUT 10 SECONDS. THE VEHICLE ALSO HAD THE SAME TYPE OF FAILURE WHILE AT A STOP LIGHT. WHILE TRYING TO ACCELERATE THE VEHICLE'S SPEED DECREASED TO 5 MPH FOR ABOUT 20-30 SECONDS. ON 10/11/06 CONTACT TOOK THE VEHICLE TO THE DEALERSHIP. DEALERSHIP REPLACED THE EXHAUST CHECK VALVE. ON 10/17/06 VEHICLE CONTINUED TO HAVE THE SAME FAILURE AND THE ENGINE LIGHT WAS TURNING ON,. THE CONTACT TOOK THE VEHICLE TO THE DEALERSHIP WHERE THEY REPLACED THE OXYGEN SENSOR. THE CONTACT CONTINUED TO HAVE THE SAME INCIDENT WITH THE TRANSMISSION SLIPPING AND THE CHECK ENGINE LIGHT COMING ON. CONTACT TOOK THE VEHICLE TO THE DEALERSHIP ON 10/3106, AND THEY REPLACED THE VALVE BODY. IT CONTINUED TO HAVE THE SAME INCIDENT WITH THE TRANSMISSION SLIPPING, BUT THIS TIME THE ENGINE LIGHT WAS NOT SHOWING. HE TOOK THE VEHICLE TO THE DEALERSHIP ON 12/20/06, AND THEY STATED THAT THERE WASN'T ANYTHING WRONG WITH THE VEHICLE. THE CONTACT CURRENTLY HAS THE VEHICLE PARKED AT HOME AND DOES NOT PLAN TO DRIVE IT BECAUSE HE DOESN'T FEEL SAFE IN VEHICLE. *AK UPDATED 2/26/2007 - *NM
NHTSA ODI #10178305
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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