NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reportsMileage unknown · Feb 14, 2011
Fuel System, Gasoline
ON MY 2004 TRAILBLAZER, MY WIFE COMPLAINED ABOUT GAS FUMES IN THE CAR. I NOTICED GAS STREAMING FROM AROUND THE TOP OF GAS TANK. I DROPPED THE GAS TANK DOWN AND NOTICED THE LEAK WAS STREAMING FROM ONE OF THE METAL LINES EXITING FROM THE FUEL PUMP. THE CORROSION WAS SO BAD I ONLY HAD TO LIGHTLY PUSH ON THE METAL LINE AND IT BROKE…
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ON MY 2004 TRAILBLAZER, MY WIFE COMPLAINED ABOUT GAS FUMES IN THE CAR. I NOTICED GAS STREAMING FROM AROUND THE TOP OF GAS TANK. I DROPPED THE GAS TANK DOWN AND NOTICED THE LEAK WAS STREAMING FROM ONE OF THE METAL LINES EXITING FROM THE FUEL PUMP. THE CORROSION WAS SO BAD I ONLY HAD TO LIGHTLY PUSH ON THE METAL LINE AND IT BROKE INTO. IF MY WIFE DIDN'T SMELL THE FUMES THIS COULD HAVE BURST INTO A FIRE IF IT EVENTUALLY SPRAYED ONTO THE EXHAUST SYSTEM. *TR
NHTSA ODI #10382660
61,725 miles · Feb 12, 2011
Vehicle Speed Control
THE SPEEDOMETER BEGAN TO BE ERRATIC AND WOULD NOT SHOW THE CORRECT SPEED. I COULD BE TRAVELING 40 MPH AND THE SPEEDOMETER WOULD SHOW 10 MPH. THEN IT WOULD JUMP TO 110 MPH, THEN ZERO. I WENT TO THE DEALER AND WAS TOLD A NEW CLUSTER BOARD WAS NEEDED. THE REPLACEMENT COST IS $600-$700. I DID AN INTERNET SEARCH AND FOUND OUT TH…
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THE SPEEDOMETER BEGAN TO BE ERRATIC AND WOULD NOT SHOW THE CORRECT SPEED. I COULD BE TRAVELING 40 MPH AND THE SPEEDOMETER WOULD SHOW 10 MPH. THEN IT WOULD JUMP TO 110 MPH, THEN ZERO. I WENT TO THE DEALER AND WAS TOLD A NEW CLUSTER BOARD WAS NEEDED. THE REPLACEMENT COST IS $600-$700. I DID AN INTERNET SEARCH AND FOUND OUT THAT HIS IS A WIDE SPREAD PROBLEM WITH THE TRAILBLAZER. I ALSO FOUND OUT THAT CHEV. HAS RECALLED OTHER VEHICLES WITH THE SAME PROBLEM, SUCH AS SUBURBAN, SILVERADO AND YUKON, BUT HAS NOT RECALLED THE TRAILBLAZER. THIS IS A SERIOUS SAFETY ISSUE. CHEVY MUST BE AWARE THAT THIS IS A BIG PROBLEM FOR TRAILBLAZER OWNERS THERE NEEDS TO BE A RECALL OF THE CLUSTER BOARD ON THE TRAILBLAZER. *TR
NHTSA ODI #10381696
83,500 miles · Feb 11, 2011
Electrical System
MODE ACTUATOR FAILURE. *TR
NHTSA ODI #10381576
146,000 miles · Feb 10, 2011
Fuel System, Gasoline
CHEVROLET TRAILBLAZER HAS CHECK ENGINE LIGHT ON. I CAN SMELL GAS WHEN VEHICLE IS IN GARAGE. LOOKED UNDERNEATH AND FOUND A CRACK IN THE FUEL TANK FILLER HOSE FLANGE. CALLED CHEVY AND FOUND THERE IS A SERVICE BULLETIN, #05012 AND TSB 07076. CHEVROLET TOLD ME THE SAME PROBLEM HAS BEEN FOUND AND FIXED ON MODELS AS THE TRAILBLAZER, …
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CHEVROLET TRAILBLAZER HAS CHECK ENGINE LIGHT ON. I CAN SMELL GAS WHEN VEHICLE IS IN GARAGE. LOOKED UNDERNEATH AND FOUND A CRACK IN THE FUEL TANK FILLER HOSE FLANGE. CALLED CHEVY AND FOUND THERE IS A SERVICE BULLETIN, #05012 AND TSB 07076. CHEVROLET TOLD ME THE SAME PROBLEM HAS BEEN FOUND AND FIXED ON MODELS AS THE TRAILBLAZER, BUT MY VEHICLE WOULD NOT BE COVERED. THE REASON IS MY VEHICLE IS REGISTERED IN TENNESSEE AND IS NOT ON THE "CORROSION LIST OF STATES". I DID NOT SEE THE DIFFERENCE AS THERE ARE VEHICLES DOCUMENTED HAVING THE SAME PROBLEM AS MINE. *TR
NHTSA ODI #10381505
82,400 miles · Feb 10, 2011
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT WHILE DRIVING 30 MPH THE FUEL DISPLAYED A HALF TANK OF GASOLINE; HOWEVER, THE FUEL TANK WAS EMPTY CAUSING THE VEHICLE TO SHUT OFF. THE CONTACT STATED THAT AT TIMES THE ENTIRE INSTRUMENT CLUSTER WOULD MALFUNCTION. THE DEALER STATED THAT THE ENTIRE INSTRUMEN…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT WHILE DRIVING 30 MPH THE FUEL DISPLAYED A HALF TANK OF GASOLINE; HOWEVER, THE FUEL TANK WAS EMPTY CAUSING THE VEHICLE TO SHUT OFF. THE CONTACT STATED THAT AT TIMES THE ENTIRE INSTRUMENT CLUSTER WOULD MALFUNCTION. THE DEALER STATED THAT THE ENTIRE INSTRUMENT CLUSTER NEEDED TO BE REPLACED. THE MANUFACTURER WAS FULLY AWARE OF THE INSTRUMENT CLUSTER FAILURE BUT HAD NOT RELEASED A RECALL. THE FAILURE MILEAGE WAS 82,400.
NHTSA ODI #10381483
42,000 miles · Feb 7, 2011
EquipmentUnknown Or Other
FAILURE OF THE GAUGE CLUSTER ON A 2004 CHEVY TRAILBLAZER CURRENTLY WITH 59,300 MILES. ABOUT JUNE 2009 THE TACH CONTINUALLY READ INCORRECTLY. DEALER TRIED TO MISLEAD ME TO BRING IT IN FOR A DIAGNOSIS AT A COST OF APPROX. $100 I TOLD THEM ITS BROKE WHY SHOULD I PAY FOR A DIAGNOSIS. I HAD READ ABOUT THE PROBLEM ON -LINE AT EDMUN…
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FAILURE OF THE GAUGE CLUSTER ON A 2004 CHEVY TRAILBLAZER CURRENTLY WITH 59,300 MILES. ABOUT JUNE 2009 THE TACH CONTINUALLY READ INCORRECTLY. DEALER TRIED TO MISLEAD ME TO BRING IT IN FOR A DIAGNOSIS AT A COST OF APPROX. $100 I TOLD THEM ITS BROKE WHY SHOULD I PAY FOR A DIAGNOSIS. I HAD READ ABOUT THE PROBLEM ON -LINE AT EDMUNDS,COM.,MY SUV HAD 41,000 TO 42,000 MILES ON IT. IN JULY 2010 MY GAS GAUGE STARTED TO OCCASIONALLY MALFUNCTION, NOW JAN. 2011 IT IS INCORRECT. IN NOV. 2010 MY CHARGING GAUGE STARTED MALFUNCTIONING. I ALSO HAVE SINCE READ ONLINE OF THE SAME PROBLEM ON OTHER SIMILAR YEAR GM TRUCKS ANS SUV AND THEY HAVE RECALLS ON THEM. ITS JUST A MATTER OF TIME FOR THE SPEEDOMETER GAUGE TO READ INCORRECTLY. PLEASE HELP, THESE MALFUNCTIONS ARE NOT SAFE. *LN
NHTSA ODI #10380964
Mileage unknown · Feb 6, 2011
Electrical System
THE INSTRUMENT PANEL DOESN'T WORK. THE SPEEDOMETER WORKS WHEN IT WANTS TO. IT WILL READ THAT I'M GOING 120 MPH WHEN I'M NOT, CURRENTLY IT'S STUCK ALL THE WAY UP! *TR
NHTSA ODI #10380876
86,000 miles · Feb 4, 2011
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE GAUGES ON THE INSTRUMENT PANEL STOPPED WORKING INTERMITTENTLY. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS SENT AND EMAIL BUT DID NOT RESPOND. THE FAILURE MILEAGE WAS 86,000.
NHTSA ODI #10380236
55,000 miles · Feb 1, 2011
Electrical System
THE TACH AND SPEEDOMETER DOES NOT FUNCTION PROPERLY ON MY 2004 TRAILBLAZER. THE SPEEDOMETER OCCASIONALLY WORKS BUT 99% OF THE TIME TELLS ME I'M GOING FASTER OR SLOWER THAN I AM. I AM CURRENTLY USING MY GPS, BUT AS WE ALL KNOW WITH GPS, IT'S NOT ALWAYS AVAILABLE ON MOUTAINS AND IT'S NOT ALWAYS 100% ACCURATE SO I BASICALLY GUESS…
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THE TACH AND SPEEDOMETER DOES NOT FUNCTION PROPERLY ON MY 2004 TRAILBLAZER. THE SPEEDOMETER OCCASIONALLY WORKS BUT 99% OF THE TIME TELLS ME I'M GOING FASTER OR SLOWER THAN I AM. I AM CURRENTLY USING MY GPS, BUT AS WE ALL KNOW WITH GPS, IT'S NOT ALWAYS AVAILABLE ON MOUTAINS AND IT'S NOT ALWAYS 100% ACCURATE SO I BASICALLY GUESS HOW FAST I AM GOING WHEN TRAVELING THROUGH WV. I CONTACTED GM DEALER, NO RECALLS THAT I AM AWARE OF BUT THOUSANDS OF ONLINE POST OF THIS PROBLEM. *LN
NHTSA ODI #10379900
108,321 miles · Jan 31, 2011
Electrical System
ON 1/23/2011 I WAS ON A TRIP, 77 MILES FROM HOME, WHEN MY 2004 CHEVY TRAILBLAZER'S INSTRUMENT PANEL WENT CRAZY. I THOUGHT MY ENGINE WOULD BLOW BECAUSE THE RPM GAUGE WENT OFF THE CHARTS, THEN WOULDN'T READ ANYTHING. THEN MY SPEEDOMETER DID THE SAME. I HAD NO IDEA HOW FAST I WAS GOING, ON THE INTERSTATE. I WAS WORRIED, SO I MOVED …
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ON 1/23/2011 I WAS ON A TRIP, 77 MILES FROM HOME, WHEN MY 2004 CHEVY TRAILBLAZER'S INSTRUMENT PANEL WENT CRAZY. I THOUGHT MY ENGINE WOULD BLOW BECAUSE THE RPM GAUGE WENT OFF THE CHARTS, THEN WOULDN'T READ ANYTHING. THEN MY SPEEDOMETER DID THE SAME. I HAD NO IDEA HOW FAST I WAS GOING, ON THE INTERSTATE. I WAS WORRIED, SO I MOVED TO THE LEFT LANE, AND STAYED BEHIND THE SLOWER TRAFFIC TO BE SAFE. WHEN I GOT HOME, I STOPPED AT MY LOCAL CHEVY DEALERSHIP WHERE I WAS TOLD THAT ALMOST EVERY TRAILBLAZER OVER 80,000 MILES IS HAVING THE SAME ISSUES. THE PROBLEM COULD BE MY INSTRUMENT PANEL COMPUTER, OR ONE OF SEVERAL BAD MODULES. THE CAN DOES NOT SHOW ANY ERROR CODE, SO THE COST TO REPAIR RANGES FROM $600 TO OVER $1500 DEPENDING ON HOW LONG IT TAKES YOUR REPAIR PERSON TO FIND THE PROBLEM. AFTER MY DIAGNOSIS I WAS ANGRY, I AM TIRED OF REPAIRING ITEMS ON THIS CAR. I WENT ONLINE TO SEE IF IT WAS RARE, OR IF ANYONE ELSE HAD THE PROBLEM, AND AN EXACT REPAIR. ON ONE WEBSITE ALONE ABOUTAUTOMOBILE.COM I FOUND OVER 1,300 TRAILBLAZER OWNERS WITH THE SAME PROBLEM. AFTER FURTHER RESEARCH I HAVE FOUND ALMOST 19,000 TRAILBLAZER COMPLAINTS ABOUT THE SAME PROBLEM. I DO BELIEVE THAT ALL TRAILBLAZERS WILL HAVE THIS ISSUE, AND THAT GM SHOULD FIX IT, WITH A RECALL REPAIR. I HAVE SENT COMPLAINTS TO GM, BUT NO RESPONSE HAS BEEN GIVEN. *TR
NHTSA ODI #10379675
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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