NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports73,068 miles · Apr 22, 2008
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. BEGINNING IN JANUARY OF 2007, THE GAS GAUGE FAILED ON THE INSTRUMENT PANEL, WHICH PREVENTED THE CONTACT FROM KNOWING THE AMOUNT OF FUEL IN THE VEHICLE. SOON AFTERWARDS, THE SPEEDOMETER BEGAN TO MALFUNCTION AND BEGAN DISPLAYING INACCURATE READINGS. THE VEHICLE HAS NOT BEEN REPA…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. BEGINNING IN JANUARY OF 2007, THE GAS GAUGE FAILED ON THE INSTRUMENT PANEL, WHICH PREVENTED THE CONTACT FROM KNOWING THE AMOUNT OF FUEL IN THE VEHICLE. SOON AFTERWARDS, THE SPEEDOMETER BEGAN TO MALFUNCTION AND BEGAN DISPLAYING INACCURATE READINGS. THE VEHICLE HAS NOT BEEN REPAIRED, BUT ARRANGEMENTS ARE BEING MADE. THE CURRENT MILEAGE WAS 84,585 AND FAILURE MILEAGE WAS 73,068.
NHTSA ODI #10225355
15,440 miles · Apr 19, 2008
Electrical System
NORMAL OPERATING OF 2004 TRAILBLAZER, 15,000 ORIG MILES. DRIVING APPROXIMATELY 40 MPH, SPEEDOMETER READING 110 MPH, WHEN STOPPED SPEEDOMETER READS 60 MPH, JUST STOPPED WORKING SUDDENLY, NO WARNING LEADING UP TO THIS PROBLEM. -THIS HAS NOT BEEN CORRECTED TO DATE. SAFETY AND TICKETS ARE A MAJOR FACTOR NOT KNOWING WHAT SPEED…
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NORMAL OPERATING OF 2004 TRAILBLAZER, 15,000 ORIG MILES. DRIVING APPROXIMATELY 40 MPH, SPEEDOMETER READING 110 MPH, WHEN STOPPED SPEEDOMETER READS 60 MPH, JUST STOPPED WORKING SUDDENLY, NO WARNING LEADING UP TO THIS PROBLEM. -THIS HAS NOT BEEN CORRECTED TO DATE. SAFETY AND TICKETS ARE A MAJOR FACTOR NOT KNOWING WHAT SPEED YOU ARE DRIVING... *TR
NHTSA ODI #10224982
20,366 miles · Apr 18, 2008
Electrical System
I BEGAN HAVING PROBLEMS WITH SPEEDOMETER AND TACHOMETER SEVERAL YEARS AGO. THE TAC AND SPEEDOMETER GO HAYWIRE AND THEN GO DEAD WHILE DRIVING DOWN THE ROAD. I BROUGHT IT IN AND WAS TOLD THAT IT WAS A FAULTY GAUGE CLUSTER THAT NEEDED TO BE REPLACED AND THAT IT WAS A PROBLEM ALREADY RECALLED IN OTHER GM VEHICLES. THE SERVICE TEC…
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I BEGAN HAVING PROBLEMS WITH SPEEDOMETER AND TACHOMETER SEVERAL YEARS AGO. THE TAC AND SPEEDOMETER GO HAYWIRE AND THEN GO DEAD WHILE DRIVING DOWN THE ROAD. I BROUGHT IT IN AND WAS TOLD THAT IT WAS A FAULTY GAUGE CLUSTER THAT NEEDED TO BE REPLACED AND THAT IT WAS A PROBLEM ALREADY RECALLED IN OTHER GM VEHICLES. THE SERVICE TECH WAS ABLE TO UNHOOK THE BATTERY CABLE AND RESET THE GAUGES BUT THEY STILL AREN'T FIXED. I HAVE BEEN READING MULTITUDES OF COMPLAINTS OF THE SAME THING. *TR
NHTSA ODI #10224898
41,625 miles · Apr 14, 2008
Electrical System
WHEN TEMPERATURES ARE COOL , BELOW 40 DEGREES F THE TACHOMETER DOESN'T WORK AT ALL. ONCE THE CAR HAS BEEN DRIVEN AWHILE AND "WARMED UP" THE TACHOMETER BEGINS WORKING. *TR
NHTSA ODI #10224514
4,500 miles · Apr 14, 2008
Structure
WHILE MY VEHICLE WAS PARKED, THE REAR HATCH WINDOW SELF EXPLODED. IT WAS WITNESSED BY MANY GENERAL MOTORS EMPLOYEES. CHECKING ON THE WEB, I FOUND THAT THIS IS MORE COMMON THAN EXPECTED. HAPPENS MOSTLY IN CHEVY TRAILBLAZERS AND FORD ESCAPES. *TR
NHTSA ODI #10224392
36,500 miles · Apr 11, 2008
Fuel System, Gasoline
SERVICE ENGINE LIGHT ON , JUST OUT OF WARRANTY AT THE TIME. GARAGE FOUND LEAK IN FUEL TANK FILL NECK. GASOLINE SMELL. *TR
NHTSA ODI #10224243
Mileage unknown · Apr 9, 2008
Electrical System
SPEEDOMETER QUIT WORKING. *TR
NHTSA ODI #10223837
45,600 miles · Apr 8, 2008
Electrical System
I HAVE A 2004 CHEVY TRAILBLAZER WITH 45,000 MILES ON IT. I WAS DRIVING ALONG THE OTHER DAY AND NOTICED MY RPM GAUGE BOUNCING AROUND. FIVE MINUTES LATER I LOOKED DOWN AND WAS GOING 120 MPH IN A SCHOOL ZONE. I JUST HAPPENED TO BE SITTING STILL. ONCE I BEGAN MOVING THE SPEEDOMETER WAS BOUNCING LIKE CRAZY. I HAVE NO IDEA WHAT WILL B…
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I HAVE A 2004 CHEVY TRAILBLAZER WITH 45,000 MILES ON IT. I WAS DRIVING ALONG THE OTHER DAY AND NOTICED MY RPM GAUGE BOUNCING AROUND. FIVE MINUTES LATER I LOOKED DOWN AND WAS GOING 120 MPH IN A SCHOOL ZONE. I JUST HAPPENED TO BE SITTING STILL. ONCE I BEGAN MOVING THE SPEEDOMETER WAS BOUNCING LIKE CRAZY. I HAVE NO IDEA WHAT WILL BE NEXT , MAYBE FILLING FULL OF GAS AND STILL BE ON EMPTY? *TR
NHTSA ODI #10223758
56,000 miles · Apr 5, 2008
Electrical System
I OWN A '04 TRAILBLAZER AND A COUPLE OF MONTHS AGO MY OIL PRESSURE GAUGE STARTED STICKING. THEN TEMP. GAUGE WAS STICKING , BATTERY GAUGE STUCK, AND SPEEDOMETER STOPPED WORKING. I HAVE OWNED THIS VEHICLE FOR LESS THAN A YEAR AND DO NOT HAVE THE MONEY TO REPLACE THE DASH CLUSTER. IF GM CAN ISSUE A RECALL ON THE OTHER VEHICLES SOME…
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I OWN A '04 TRAILBLAZER AND A COUPLE OF MONTHS AGO MY OIL PRESSURE GAUGE STARTED STICKING. THEN TEMP. GAUGE WAS STICKING , BATTERY GAUGE STUCK, AND SPEEDOMETER STOPPED WORKING. I HAVE OWNED THIS VEHICLE FOR LESS THAN A YEAR AND DO NOT HAVE THE MONEY TO REPLACE THE DASH CLUSTER. IF GM CAN ISSUE A RECALL ON THE OTHER VEHICLES SOMEBODY SHOULD FORCE THEM TO ISSUE A RECALL FOR THE TRAILBLAZERS ALSO. THIS IS A SAFETY ISSUE THAT THEY SHOULD BE RESPONSIBLE FOR NOT US THE CONSUMERS. *TR
NHTSA ODI #10223461
33,000 miles · Apr 3, 2008
Fuel System, Gasoline
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE LIGHT ILLUMINATED AND THE MESSAGE CENTER INFORMED THE CONTACT TO TIGHTEN THE GAS CAP. WHEN HE ATTEMPTED TO TIGHTEN THE GAS CAP, HE NOTICED A THIN CRACK IN THE FILLER NECK. WHEN HE FILLS THE GAS TANK, THERE WAS SOME LEAKAGE FROM…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING AT VARIOUS SPEEDS, THE CHECK ENGINE LIGHT ILLUMINATED AND THE MESSAGE CENTER INFORMED THE CONTACT TO TIGHTEN THE GAS CAP. WHEN HE ATTEMPTED TO TIGHTEN THE GAS CAP, HE NOTICED A THIN CRACK IN THE FILLER NECK. WHEN HE FILLS THE GAS TANK, THERE WAS SOME LEAKAGE FROM THE CRACK OF THE FILLER NECK. THE CONTACT HAS TAKEN THE VEHICLE TO THE DEALER, BUT IT WAS NOT SERVICED BECAUSE THE WARRANTY WAS EXPIRED. THE CURRENT MILEAGE WAS 34,000 AND FAILURE MILEAGE WAS 33,000. UPDATED 04/22/08. *LJ THE PIPE TO THE GAS TANK WAS COMPOSED OF PLASTIC. IT HAS A CRACK ABOUT 1/2 INCHES LONG AT THE GAS CAP AREA, THUS ALLOWING VAPORS TO ESCAPE THE TANK. UPDATED
NHTSA ODI #10223266
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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