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2004 Chevrolet Trailblazer

Owner reports · Recalls · Investigations

More warning signs than most Trailblazer years

Owner complaints for the 2004 Chevrolet Trailblazer are substantially higher than the model-year median of 87.5.

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When problems were reported

Mileage at the reported incident

899 reports with mileage · 182 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Electrical System. Review the 627 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Exterior Lighting. Review the 101 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 93 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

56 crash reports31 fire reports47 injury reports

What owners actually said

1,081 reports
41,700 miles · Mar 19, 2010
Electrical System

TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING THE CONTACT OBSERVED THE ENTIRE INSTRUMENT PANEL FAILED. THE SPEEDOMETER DISPLAYED INACCURATE READINGS AT ANY GIVEN SPEED RATE. IN ADDITION, THE OTHER GAUGES WERE NONFUNCTIONAL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR INSPECTION. THE INSTRUMENT PANEL WA…

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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING THE CONTACT OBSERVED THE ENTIRE INSTRUMENT PANEL FAILED. THE SPEEDOMETER DISPLAYED INACCURATE READINGS AT ANY GIVEN SPEED RATE. IN ADDITION, THE OTHER GAUGES WERE NONFUNCTIONAL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR INSPECTION. THE INSTRUMENT PANEL WAS REPLACED FOR THE MALFUNCTION. THE FAILURE MILEAGE WAS 41,700. UPDATED 05/14/2010. *LJ

NHTSA ODI #10320941

41,200 miles · Mar 16, 2010
Electrical System

2004 CHEVY TRAILBLAZER. INSTRUMENT PANEL FAILS. NO SPEEDOMETER, GAS GAUGE, BATTERY, OIL, ETC. *TR

NHTSA ODI #10320314

60,000 miles · Mar 16, 2010
Electrical System

WHILE USING CRUISE CONTROL AT HIGHWAY SPEED THE SPEEDOMETER ERRATICALLY INCREASES. BRAKING TO A STOP DOES NOT TAKE THE SPEEDOMETER TO ZERO. TURNING THE VEHICLE OFF AND RESTARTING SOMETIMES PUTS THE SPEEDOMETER NEEDLE TO ZERO IN FIVE MILE INCREMENTS WITH EACH CYCLE. PROBLEM IS RECURRING. VEHICLE IS TAKEN TO THE DEALER AND A "CLUS…

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WHILE USING CRUISE CONTROL AT HIGHWAY SPEED THE SPEEDOMETER ERRATICALLY INCREASES. BRAKING TO A STOP DOES NOT TAKE THE SPEEDOMETER TO ZERO. TURNING THE VEHICLE OFF AND RESTARTING SOMETIMES PUTS THE SPEEDOMETER NEEDLE TO ZERO IN FIVE MILE INCREMENTS WITH EACH CYCLE. PROBLEM IS RECURRING. VEHICLE IS TAKEN TO THE DEALER AND A "CLUSTER" PROBLEM IS DIAGNOSED WITH ESTIMATED COST TO BE AROUND $500. INTERNET RESEARCH REVEALS THIS TO BE MORE THAN A SPORADIC PROBLEM RESULTING IN THE MANUFACTURER RECALLING A NUMBER OF VEHICLE MODELS BUT NOT THE TRAILBLAZER. A CALL TO GM'S CUSTOMER SERVICE DEPARTMENT CULMINATES ONLY WITH A FORMAL COMPLAINT BEING REGISTERED ... THIS TOO BEING THE COMMON END FOR OWNERS OF TRAILBLAZERS (ACCORDING TO INTERNET RESEARCH) THE PROBLEM IS A POTENTIAL SAFETY HAZARD AS WHEN THIS OCCURS WITHOUT WARNING ONE HAS TO GAUGE DRIVING SPEED BY SURROUNDING TRAFFIC. *TR

NHTSA ODI #10320313

65,000 miles · Mar 16, 2010
Electrical System

TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 65 MPH, THE VEHICLE FUEL GAUGE AND TEMPERATURE GAUGE BECAME INOPERATIVE. THERE WAS A SEPARATE OCCASION THE ENTIRE INSTRUMENT PANEL FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR INSPECTION. THE TECHNICIAN STATED …

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TL* THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE THE CONTACT WAS DRIVING APPROXIMATELY 65 MPH, THE VEHICLE FUEL GAUGE AND TEMPERATURE GAUGE BECAME INOPERATIVE. THERE WAS A SEPARATE OCCASION THE ENTIRE INSTRUMENT PANEL FAILED TO FUNCTION. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR INSPECTION. THE TECHNICIAN STATED THE INSTRUMENT PANEL REQUIRED REPLACEMENT. THE VEHICLE HAD NOT BEEN REPAIRED FOR THE FAILURE AT THE TIME OF THE COMPLAINT. THE VIN WAS NOT AVAILABLE. THE FAILURE WAS 65,000. THE CURRENT MILEAGE WAS 74,000.

NHTSA ODI #10320179

40,000 miles · Mar 15, 2010
Structure

TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 60 MPH THE CONTACT NOTICED THAT THE REAR SPOILER HAD SUDDENLY SEPARATED FROM THE REAR END OF THE VEHICLE. THE DEALERSHIP WAS CONTACTED AND INFORMED THE CONTACT THAT THE VEHICLE COULD NOT BE SERVICED. PRIOR TO THE RECENT FAILURE THE VEHICLE WAS TAKEN TO THE DEALERSHI…

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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 60 MPH THE CONTACT NOTICED THAT THE REAR SPOILER HAD SUDDENLY SEPARATED FROM THE REAR END OF THE VEHICLE. THE DEALERSHIP WAS CONTACTED AND INFORMED THE CONTACT THAT THE VEHICLE COULD NOT BE SERVICED. PRIOR TO THE RECENT FAILURE THE VEHICLE WAS TAKEN TO THE DEALERSHIP ON 3 PRIOR OCCASIONS WHERE THE SPOILER WAS REPLACED EACH TIME. THE FAILURE MILEAGE WAS 40,000 AND THE CURRENT MILEAGE WAS 82,000. UPDATED 05/10/10 *BF THE FIRST TIME, THE DEALER REPLACED THE SPOILER UNDER WARRANTY. THE SECOND TIME IT BLEW OFF AND THE DEALER STATED THEY WOULDN'T REPLACE IT DUE TO THE MILEAGE ON THE VEHICLE. UPDATED 06/04/10.*JB

NHTSA ODI #10319914

69,000 miles · Mar 11, 2010
Fuel System, Gasoline

MY 2004 CHEVY TRAILBLAZER WILL NOT ACCEPT GASOLINE. I HAD A 1/4 TANK LEFT AND WENT TO A GAS STATION. TO MY SURPRISE THE VEHICLE WOULD NOT LET ME FILL THE TANK. I WAS FIRST TOLD THAT THE VENT MIGHT BE DIRTY THEN A CYLINDER IN THE GAS TANKS SYSTEM MIGHT HAVE FAILED. THE MECHANIC FOUND A BULLETIN THAT SAID I HAD TO REPLACE THE FUEL…

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MY 2004 CHEVY TRAILBLAZER WILL NOT ACCEPT GASOLINE. I HAD A 1/4 TANK LEFT AND WENT TO A GAS STATION. TO MY SURPRISE THE VEHICLE WOULD NOT LET ME FILL THE TANK. I WAS FIRST TOLD THAT THE VENT MIGHT BE DIRTY THEN A CYLINDER IN THE GAS TANKS SYSTEM MIGHT HAVE FAILED. THE MECHANIC FOUND A BULLETIN THAT SAID I HAD TO REPLACE THE FUEL TANK FILLER UPPER PIPE AND LOWER HOSE BECAUSE OF VAPORS FILLING UP INSIDE. I PAID FOR GAS THAT ENDED UP ALL OVER THE GROUND INSTEAD OF IN MY TANK. I CALLED THE DEALER TO FIND OUT THAT A BULLETIN IS DIFFERENT THEN A RECALL SO THEY WERE NOT ENTITLED TO PAY FOR IT. I PURCHASED IN 2009 AND GM KNOWS ABOUT IT BUT WILL NOT RECALL IT. WHAT IF IT EXPLODES IN THE GAS STATION FROM THE VAPORS. WHO'S FAULT WOULD IT BE THEN. I HAD NO IDEA AND WOULD NEVER BUY A CHEVY AGAIN. FIRST I HAD A PROBLEM WITH THE CHECK ENGINE LIGHT COMING ON WHEN THE GAS CAP WAS NOT PUT BACK ON RIGHT AND NOW I CAN'T EVEN GET GAS. WHAT GOOD IS A VEHICLE IF YOU CAN'T USE IT. I AM STILL PAYING FOR IT. AS SOON AS IT PAID FOR I WILL BE TRADING IT IN. THE DEALER GAVE ME A SMO ABOUT A 3 YEAR 36,000 MILE WARRANTY. WHEN I BOUGHT IT HAD 62,500 MILES ALREADY ON IT. WHY SHOULD I PAY FOR SOMETHING THEY KNEW WAS A PROBLEM BUT WON'T RECALL. PLEASE RECALL THIS VEHICLE. IN READING THE BULLETINS FOR THIS VEHICLE I FOUND THAT THERE ARE PROBLEMS WITH THE ELECTRICAL SYSTEM, THE AIR BAGS, THE FUEL SYSTEM, THE TRANSMISSION, SPEEDOMETER, ETC. HOW MANY PROBLEMS DO YOU NEED FOR ONE VEHICLE OR ARE THEY WAITING FOR SOMEONE TO GET KILLED OVER IT. THE BULLETIN SAYS THAT A SMALL AMOUNT OF FUEL MAY SPIT BACK OUT. WELL THAT IS A LIE. ALL THE FUEL IN THE 1/4 TANK SPILLED OUT ON THE GROUND AND I PAID FOR THE GAS I COULD NOT GET IN THE TANK. GM IS NO HELP, DEALER IS NO HELP. THE ONLY ONE THAT WAS STRAIGHT UP WITH ME WAS THE MECHANIC. I AM GOING TO HATE TO SEE THE BILL FOR THIS ONE. MY TAX DOLLARS AT WORK. I AGREE WHY SHOULD WE BAIL OUT THE AUTO COMPANIES WHEN THEY DON'T CARE WHAT KIND OF VEHICLE THEY PRODUCE. *TR

NHTSA ODI #10318914

80,000 miles · Mar 9, 2010
Electrical System

INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) AS LONG AS YOUR BEATING UP ON TOYOTA, BEAT UP ON A COMPANY THAT REAL MAKES AN INFERIOR PRODUCT. GMAC. I HAVE BEEN RESEARCHING THIS ON THE WEB AND THEIR ARE THOUSANDS OF COMPLAINTS FOR THIS VERY ISSUE. I HAVE A 2004 TRAIL BLAZER. M…

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INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6) AS LONG AS YOUR BEATING UP ON TOYOTA, BEAT UP ON A COMPANY THAT REAL MAKES AN INFERIOR PRODUCT. GMAC. I HAVE BEEN RESEARCHING THIS ON THE WEB AND THEIR ARE THOUSANDS OF COMPLAINTS FOR THIS VERY ISSUE. I HAVE A 2004 TRAIL BLAZER. MY ODOMETER AND SPEEDOMETER START TO SLOW DOWN AND THEN ALL OF A SUDDEN YOU LOOK UP AND I AM GOING NEGATIVE RPMS AND NEGATIVE MPH WHILE CRUISING DOWN THE HIGHWAY. OR THE NEXT TIME IT WILL GO FAST THAN I AM TRAVELING. EACH MORNING THOUGH IT STARTS OUT WORKING CORRECTLY, THEN AFTER ABOUT AN HOUR IT GOES OFF AGAIN. ONCE IT GOES OFF IT STAYS OFF TILL THE CAR HAS BEEN SHUT DOWN OVER NIGHT. LOOSING YOUR SPEED WHILE DRIVING IS DANGEROUS. GM HAS BEEN CHURNING OUT CHEAP JUNK FOR YEARS. LIGHT THEM UP. [XXX] *TR

NHTSA ODI #10318083

92,000 miles · Mar 9, 2010
Electrical System

MY SPEEDOMETER AND RPM DIAL HAVE STOPPED WORKING ON MY 2004 CHEVY TRAILBLAZER. I CALLED THE 800 NUMBER AND THE LADY TOLD ME THAT I AM NOT COVERED FOR THEIR SPECIAL PROVISIONING FOR THIS KNOWN PROBLEM. THAT THEIR SPECIAL PROVISIONING ONLY COVERS VEHICLES 7YRS/70K MILEAGE. I HAVE OVER 90K MILES AND THEY ARE NOT WILLING TO COVER…

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MY SPEEDOMETER AND RPM DIAL HAVE STOPPED WORKING ON MY 2004 CHEVY TRAILBLAZER. I CALLED THE 800 NUMBER AND THE LADY TOLD ME THAT I AM NOT COVERED FOR THEIR SPECIAL PROVISIONING FOR THIS KNOWN PROBLEM. THAT THEIR SPECIAL PROVISIONING ONLY COVERS VEHICLES 7YRS/70K MILEAGE. I HAVE OVER 90K MILES AND THEY ARE NOT WILLING TO COVER ME. I CAN?T AFFORD TO PAY FOR THIS TO BE FIXED. I WILL NEVER BUY ANOTHER CHEVY CAR I CAN?T BELIEVE THERE IS NO RECALL FOR THIS ISSUE. THERE ARE 1000'S OF COMPLAINTS ONLINE THIS SHOULD BE A RECALL. *TR

NHTSA ODI #10317965

85,000 miles · Mar 4, 2010
Electrical System

TWO YEARS AGO MY WIFE AND I WERE DRIVING OUR 2004 CHEVY TRAILBLAZER ON THE INTERSTATE WHEN OUR SPEEDOMETER, OIL GAUGE, TACHOMETER,AND VOLTMETER WENT OUT. WE COULD NOT SEEM TO FIGURE OUT WHY EVERYONE WAS PASSING BY US SO QUICKLY WHEN WE WERE GOING THE SPEED LIMIT ACCORDING TO THE SPEEDOMETER. THANKFULLY WE HAD GPS AND WERE ABLE T…

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TWO YEARS AGO MY WIFE AND I WERE DRIVING OUR 2004 CHEVY TRAILBLAZER ON THE INTERSTATE WHEN OUR SPEEDOMETER, OIL GAUGE, TACHOMETER,AND VOLTMETER WENT OUT. WE COULD NOT SEEM TO FIGURE OUT WHY EVERYONE WAS PASSING BY US SO QUICKLY WHEN WE WERE GOING THE SPEED LIMIT ACCORDING TO THE SPEEDOMETER. THANKFULLY WE HAD GPS AND WERE ABLE TO FIGURE OUT QUICKLY WHAT WAS HAPPENING. THIS IS A VERY DANGEROUS PROBLEM. IF WE DIDN'T HAVE GPS WE WOULD HAVE ABSOLUTELY NO WAY OF KNOWING HOW FAST WE WERE GOING. SOON AFTER THIS HAPPENED, THE CHECK ENGINE LIGHT CAME ON AND WE WERE HAVING ALL KINDS OF ELECTRICAL PROBLEMS WITH SENSORS GOING BAD. I HAVE RESEARCHED THESE PROBLEMS AND IT SEEMS AS THOUGH WE ARE NOT THE ONLY ONES WITH THIS PROBLEM. GM HAS NOT ISSUED A RECALL ON THIS MODEL FOR THIS PROBLEM, YET THEY DID FOR THE SUBURBAN LINE FOR THE SAME PROBLEM. PLEASE, IF YOU CAN, DO SOMETHING ABOUT THIS PROBLEM. WE HAVE YET TO FIX THESE PROBLEMS HOPING FOR A RECALL BUT HAVE HAD NO LUCK. WE ARE NOW IN THE PROCESS OF FIXING THESE PROBLEMS SO WE CAN PASS INSPECTION. THANKYOU VERY MUCH. *TR

NHTSA ODI #10316896

82,200 miles · Mar 3, 2010
Electrical System

2004 CHEVY TRAILBLAZERS INSTRUMENT PANEL ISN'T WORKING PROPERLY. THE RPM GAUGE FLUCTUATES AND OFTEN DOESN'T WORK WHICH SEEMS TO CAUSE THE SPEEDOMETER TO RESPOND SLOWLY. I HAVE HEARD FROM OTHERS WITH THE SAME ISSUE THAT EVENTUALLY THE SPEEDOMETER WILL QUIT AS WILL THE GAS GAUGE, OIL GAUGE, ETC. THIS IS A POTENTIAL HAZARD THAT HAS…

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2004 CHEVY TRAILBLAZERS INSTRUMENT PANEL ISN'T WORKING PROPERLY. THE RPM GAUGE FLUCTUATES AND OFTEN DOESN'T WORK WHICH SEEMS TO CAUSE THE SPEEDOMETER TO RESPOND SLOWLY. I HAVE HEARD FROM OTHERS WITH THE SAME ISSUE THAT EVENTUALLY THE SPEEDOMETER WILL QUIT AS WILL THE GAS GAUGE, OIL GAUGE, ETC. THIS IS A POTENTIAL HAZARD THAT HAS NOT BEEN RECALLED BY CHEVY. OTHER MODELS OF THE SAME YEAR HAVE BEEN RECALLED, BUT NOT THE TRAILBLAZER. *TR

NHTSA ODI #10316109

Official recalls

2

05V198000 · Exterior Lighting:turn Signal

May 5, 2005

ON CERTAIN TRUCKS AND SPORT UTILITY VEHICLES, THE DRIVER WISHING TO SIGNAL A TURN BY MOVING THE DIRECTIONAL SIGNAL LEVER, (UP OR DOWN) MAY CAUSE THE FRONT MARKER/TURN LIGHTS AND REAR TURN LIGHTS TO FLASH IN A MANNER SIMILAR TO HAZARD WARNING, RATHER THAN FLASHING ON THE DESIRED SIDE ONLY.

Consequence & remedy

Consequence: THE DRIVER MAY NOT BE ABLE TO CLEARLY SIGNAL THEIR INTENTIONS TO TURN, CHANGE TRAVEL LANES, OR POTENTIALLY WARN OTHERS OF AN IMPAIRED VEHICLE OPERATING CONDITION INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REPLACE THE SUSPECT FLASHER MODULES WITH A NEW FLASHER MODULE DESIGNED WITH SEALED RELAYS AND MORE DURABLE CONTACT MATERIAL INSIDE OF THE RELAYS FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 4, 2005. ISUZU BEGAN MAILING OWNER LETTERS ON AUGUST 4, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, ISUZU AT 1-800-255-6727, BUICK AT 1-866-608-8080, AND OLDSMOBILE AT 1-800-630-6537.

04V527000 · Exterior Lighting:brake Lights

Nov 1, 2004

ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE.

Consequence & remedy

Consequence: AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH.

Remedy: DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR GMC AT 1-866-996-9463.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

4

RQ17002 · 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.