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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.

About this comparison →

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
10,000 miles · Nov 21, 2005
Exterior Lighting

DT: THE CONTACT STATED THE HEADLIGHTS WERE FLASHING ON AND OFF. THE CONTACT TOOK THE VEHICLE TO THE DEALER THREE TIMES. THE DEALER STATED THAT THIS WAS NORMAL ACTIVITY. NO CAUSE HAS BEEN DETERMINED. THE MANUFACTURER WAS CONTACTED. THEY OFFERED NO FREE REMEDY.*AK UPDATED 12/27/05. *JB

NHTSA ODI #10143332

Mileage unknown · Nov 18, 2005
Electrical System

I WANT GM TO BE LOOKING INTO A PROBLEM THEY HAVE ABOUT THERE TRAILBLAZERS. I HAVE HAD MANY PROBLEMS WITH ELECTRICAL AND STALLING. I HAVE HAD 3 COMPUTER BRAINS PUT IN, AND THE ELECTRICAL DONE ONCE. YET THE DEALERSHIP CAN FIND NO PROBLEMS WITH THIS VEHICLE!! IN THE ELECTRICAL THE GAUGES WOULD FREAK OUT, AND EVEN TOOK OUT THE FUEL …

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I WANT GM TO BE LOOKING INTO A PROBLEM THEY HAVE ABOUT THERE TRAILBLAZERS. I HAVE HAD MANY PROBLEMS WITH ELECTRICAL AND STALLING. I HAVE HAD 3 COMPUTER BRAINS PUT IN, AND THE ELECTRICAL DONE ONCE. YET THE DEALERSHIP CAN FIND NO PROBLEMS WITH THIS VEHICLE!! IN THE ELECTRICAL THE GAUGES WOULD FREAK OUT, AND EVEN TOOK OUT THE FUEL SENSOR. THEN I HAD A SHOCK WHEN YOU TOUCH THE GEAR SHIFT, I WAS TOLD TO QUIT DRAGGING MY FEET ON THAT ONE. THEN IT WENT TO THE CAR STALLING OR NOT EVEN STARTING AT ALL. THE DEALERSHIP YET TO FIGURE THE PROBLEM OUT. KNOW THE WARRANTY IS EXPIRED I AM HAVING A HARD TIME WITH THE GETTING REPAIRS, OR IT LOOKED OUT. I NO LONGER TRUST THIS CAR, AND DO NOT ALLOW MY CHILDREN TO RIDE IN FOR LONG DISTANCES AT ALL. I HAVE HAD MORE PROBLEMS SINCE MY WARRANTY WENT OUT, AND IT PROCEEDS TO ONLY GET WORSE. AND I CAN DO NOTHING ABOUT IT, SINCE THE PROBLEMS STARTED AFTER THE TIME LINE FOR THE LEMON LAW WAS UP (BOUGHT AS A PREVIOUSLY OWNED VEHICLE.) OR DEALER TRADE BACK! *JB

NHTSA ODI #10143166

Mileage unknown · Nov 4, 2005
Engine And Engine Cooling

DT: THE CONTACT STATE WHILE DRIVING THE VEHICLE STALLED WITHOUT WARNING. SHE WAS ABLE TO RESTART THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO THE DEALERSHIP FOR INSPECTION. THE DEALERSHIP INFORMED HER IT WAS THE CRANK SHAFT SENSOR. SHE CONTACTED THE MANUFACTURER, AND THEY INFORMED HER THAT IT WAS DUE TO A DEFECTIVE SEN…

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DT: THE CONTACT STATE WHILE DRIVING THE VEHICLE STALLED WITHOUT WARNING. SHE WAS ABLE TO RESTART THE VEHICLE. THE CONTACT TOOK THE VEHICLE TO THE DEALERSHIP FOR INSPECTION. THE DEALERSHIP INFORMED HER IT WAS THE CRANK SHAFT SENSOR. SHE CONTACTED THE MANUFACTURER, AND THEY INFORMED HER THAT IT WAS DUE TO A DEFECTIVE SENSOR. NO REPAIRS HAVE BEEN MADE AT THIS TIME.*AK

NHTSA ODI #10141767

25 miles · Oct 30, 2005
Electrical SystemPower TrainSteering

SHORTLY AFTER I PURCHASED A 2004 CHEVY TRAILBLAZER I BEGAN TO HAVE PROBLEMS WITH A LOUD VIBRATION FROM THE UNDERCARRIAGE. IT HAS BEEN TO THE SHOP NUMEROUS TIMES BUT IS STILL NOT FIXED. RECENTLY THE VEHICLE BEGAN STALLING OUT AT ANY GIVEN TIME. DEALER COULD NOT REPLICATE. STILL DOES IT!!! AROUND THE SAME TIME MY TRANSMISSIO…

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SHORTLY AFTER I PURCHASED A 2004 CHEVY TRAILBLAZER I BEGAN TO HAVE PROBLEMS WITH A LOUD VIBRATION FROM THE UNDERCARRIAGE. IT HAS BEEN TO THE SHOP NUMEROUS TIMES BUT IS STILL NOT FIXED. RECENTLY THE VEHICLE BEGAN STALLING OUT AT ANY GIVEN TIME. DEALER COULD NOT REPLICATE. STILL DOES IT!!! AROUND THE SAME TIME MY TRANSMISSION WOULD SLIP. DEALER COULD NOT REPLICATE. STILL DOES IT!!! NOW I AM FEELING A LOT OF VIBRATION IN THE STEERING WHEEL WHEN I TURN. TALKED TO OTHER TB OWNERS AND I THINKING I WILL NEED TO REPLACE THE STRUTS. WHAT NEXT!! *NM

NHTSA ODI #10141224

100 miles · Oct 28, 2005
Fuel System, Gasoline

WHEN FILLING GAS TANK, GAS SPEWS OUT OF THE GAS TANK BEFORE THE PUMP TURNS OFF. IT DON'T MATTER HOW THE GAS NOZZLE IS PUT IN. IT HAPPENS EVERY TIME. *NM

NHTSA ODI #10141153

Mileage unknown · Oct 27, 2005
Electrical SystemExterior Lighting

WHILE DRIVING HEADLIGHTS DIM VERY LOW TO THE POINT THAT YOU CAN NOT SEE. DOESN'T HAPPEN EVERY TIME. DASHBOARD LIGHTS ALSO GO VERY LOW. VEHICLE TAKEN IN TO DEALERSHIP IN APRIL. TECH SAYS CAN NOT DUPLICATE PROBLEM. CAR TAKEN IN AGAIN THIS TIME CD PLAYER WILL STOP PLAYING IF VOLUME IS TURNED ALL THE WAY DOWN FOR MORE THAT 2 MINS. I…

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WHILE DRIVING HEADLIGHTS DIM VERY LOW TO THE POINT THAT YOU CAN NOT SEE. DOESN'T HAPPEN EVERY TIME. DASHBOARD LIGHTS ALSO GO VERY LOW. VEHICLE TAKEN IN TO DEALERSHIP IN APRIL. TECH SAYS CAN NOT DUPLICATE PROBLEM. CAR TAKEN IN AGAIN THIS TIME CD PLAYER WILL STOP PLAYING IF VOLUME IS TURNED ALL THE WAY DOWN FOR MORE THAT 2 MINS. IN ORDER TO MAKE IT PLAY AGAIN YOU HAVE TO EJECT CD AND REINSERT. RADIO WAS SUPPOSE TO BE ORDERED NEVER RECEIVED IT. CAR TAKEN IN AGAIN THIS TIME DIFFERENT DEALERSHIP FOUND PROBLEM WITH RADIO AND IT WAS REPLACED ASKED FOR THEM TO CHECK HEADLIGHTS BECAUSE PROBLEM STILL HAPPENS. THEY ALSO CANNOT DUPLICATE PROBLEM. AFTER LEAVING DEALERSHIP CD PLAYERS STOPS PLAY AGAIN. SEPT 28, 2005 WHILE AT BANK DRIVE THROUGH CAR STALLS OUT, ABLE TO RESTART CAR. TOOK VEHICLE TO DEALERSHIP TOLD THEM ABOUT THE STALLING OUT, HEADLIGHTS, AND CD PLAYER. AFTER HAVING MY CAR THERE A WEEK AND 3 DAYS THERE CONCLUSION WAS THAT THE STALLING OUT WAS BECAUSE THE WAS CARBON BUILD UP IN THROTTLE BODY THIS WAS CLEANED OUT. MY CAR HAS 19,000 MILES AND IS A YEAR OLD I DON;T BELIEVE THIS IS THE PROBLEM. WHILE THERE A NEW CD PLAYER WAS PUT IN, I WAS TOLD THAT THE ONE THAT WAS REPLACED BEFORE WAS A REFURBISHED ONE AND IT DIDN'T SURPRISE THEM THAT IT DIDN'T WORK. THE HEADLIGHTS WE WERE TOLD THAT WE WERE CRAZY AT FIRST AND THEN AFTER SPEAKING WITH THE SERVICE MANAGER WAS TOLD THAT MY VEHICLE HAS CALIFORNIA EMISSIONS WHICH MEANS WE HAVE A 2ND AIR INTAKE ON IT THAT CAUSES THE ALTERNATOR TO DRAIN CAUSING THE LIGHTS TO DIM. GM HAS TOLD US THIS IS NORMAL!!!!!! I AM SORRY I AM NOT WILLING TO PUT MY FAMILY LIVES ON THE LINE BECAUSE I HAPPEN TO BUY A NEW CAR IN VIRGINIA THAT WAS MADE IN CALIFORNIA. I LEAVE IN A RURAL AREA NOT THE CITY SO IF I LOSE MY HEADLIGHTS THEN THAT MEANS I CAN'T SEE. THIS DOESN'T MEAN ANYTHING TO THEM. WE DO HAVE A MEETING IN NOV WITH THE NORTHERN AREA MANAGER. THIS IS NOT A NORMAL OPERATION OF A CAR NOR SHOULD IT BE DESIGNED TO DO THIS. *NM

NHTSA ODI #10140927

22,000 miles · Oct 19, 2005
Service Brakes, Hydraulic

DT: THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE VEHICLE HAS BEEN TO THE DEALERSHIP ABOUT 4 OR 5 TIMES FOR THE BRAKE SYSTEM. WHEN A DIAGNOSTIC TEST WAS PERFORMED ON THE VEHICLE IT DID NOT INDICATE THAT THERE WAS A BRAKE PROBLEM. . WHEN THE BRAKES WERE APPLIED THE PEDAL WENT TO THE FLOOR, THE VEHICLE WOULD SLOW DO…

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DT: THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE VEHICLE HAS BEEN TO THE DEALERSHIP ABOUT 4 OR 5 TIMES FOR THE BRAKE SYSTEM. WHEN A DIAGNOSTIC TEST WAS PERFORMED ON THE VEHICLE IT DID NOT INDICATE THAT THERE WAS A BRAKE PROBLEM. . WHEN THE BRAKES WERE APPLIED THE PEDAL WENT TO THE FLOOR, THE VEHICLE WOULD SLOW DOWN, BUT WILL NOT STOP. NO WARNING LIGHTS ILLUMINATED ,INDICATING THAT THERE WAS A PROBLEM WITH THE BRAKES. THIS DID NOT HAPPEN EVERY TIME THAT THE BRAKES WERE APPLIED. THE WEATHER CONDITION HAS NO IMPACT ON THE BRAKING CAPABILITY. THE MANUFACTURER STATED THAT IF THE DIAGNOSTIC TEST SHOWED THERE WAS NOTHING WRONG THEN THERE WAS NOTHING THAT THEY COULD DO ABOUT THE PROBLEM. *AK

NHTSA ODI #10140227

4,000 miles · Oct 10, 2005
Fuel System, Gasoline

I HAVE 2004 TRAILBLAZER AND I HAVE HAD THE GAS LINE REPLACED AND ADJUSTED SEVERAL TIME DUE TO UNABLE TO FILL UP WITH GAS AND I AGAIN TOOK IT BACK NOW THEY WANT TO REPLACE THE GAS TANK . THIS IS AN ON GOING PROBLEM AND THE WARRANTY HAS JUST WENT OUT AND I AM STILL HAVING THESE PROBLEMS IT WILL WORK FOR A FEW MONTHS THEN IT WONT L…

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I HAVE 2004 TRAILBLAZER AND I HAVE HAD THE GAS LINE REPLACED AND ADJUSTED SEVERAL TIME DUE TO UNABLE TO FILL UP WITH GAS AND I AGAIN TOOK IT BACK NOW THEY WANT TO REPLACE THE GAS TANK . THIS IS AN ON GOING PROBLEM AND THE WARRANTY HAS JUST WENT OUT AND I AM STILL HAVING THESE PROBLEMS IT WILL WORK FOR A FEW MONTHS THEN IT WONT LET YOU FILL IT UP ANY MORE AND I HAVE TO CONTINUE TA TAKE IT IN. *NM

NHTSA ODI #10139210

20,000 miles · Sep 7, 2005
Engine And Engine CoolingFire

OUR FAMILY WAS DRIVING FROM COLUMBUS, OHIO TO LOUISVILLE, KY. WE HAD JUST CROSSED THE STATE LINE GOING UP I-75 HILL NEAR FLORANCE. WHEN MY WIFE SAID SHE SEEN SMOKE OUT HER SIDE MIRROR. I LOOKED IN REAR VIEW MIRROR AND SEEN A LITTLE MYSELF. I WAS IN FAST LANE RUNNING SPEED LIMIT, ALL GAUGES SHOWED ALL WAS OK. I PUT TURN SIG…

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OUR FAMILY WAS DRIVING FROM COLUMBUS, OHIO TO LOUISVILLE, KY. WE HAD JUST CROSSED THE STATE LINE GOING UP I-75 HILL NEAR FLORANCE. WHEN MY WIFE SAID SHE SEEN SMOKE OUT HER SIDE MIRROR. I LOOKED IN REAR VIEW MIRROR AND SEEN A LITTLE MYSELF. I WAS IN FAST LANE RUNNING SPEED LIMIT, ALL GAUGES SHOWED ALL WAS OK. I PUT TURN SIGNAL ON TO BEGIN FINDING A PLACE TO STOP. OTHER CARS NEAR US BEGAN BLOWING HORNS AND POINTING AT FRONT RIGHT SIDE OF CAR. ONCE WE GOT PULLED OFF SIDE OF ROAD, WE TURNED VEHICLE OFF. I PULLED THE HOOD RELEASE OF OUR 2004 CHEVY TRAILBLAZER. THE FIRE WAS ALREADY FLAMING OUT THE FRONT OF THE HOOD WHERE YOU COULD NOT TOUCH IT TO OPEN THE HOOD UP. FLAMES WERE ALSO VERY BAD ON THE FRONT WHEEL AREA. MY FAMILY EXITED THE VEHICLE AND GOT SAFELY AWAY. IT IS NOW BEING INVESTIGATED BY GM. WAS SUPPOSE TO HEAR A UPDATE BY AUGUST 31ST ON INVESTIGATION. THEY MOVED DATE TO SEPTEMBER 2 WITH NO RESPONSE. I CONTACTED THEM ON SEPTEMBER 6 AND THEY SAID THEY ARE AWAITING PICTURES OF VEHICLE TO BE REVIEWED. THEY SAID THEY WOULD UPDATE ME ON SEPTEMBER 7. THIS VEHICLE WAS PURCHASED NEW AND HAD JUST TURNED 20K MILES. *NM

NHTSA ODI #10135513

Mileage unknown · Sep 2, 2005
Service Brakes, HydraulicCrash

MY DAUGHTER WAS DRIVING MY 2004 TRAILBLAZER ON AN ICY, SLIPPERY ROAD AT 25 -30 MILES PER HOUR, (THE SPEED LIMIT IS 30, IT WAS THE STREET WE LIVE ON) WHEN SHE LOST CONTROL, HIT A TREE AND TOTALED ($22,000.00) THE VEHICLE. THE OFFICER AND I WALKED THE PATH IN THE STREET AND COULD NOT FIND ANY SIGNS OF SKIDDING OR BRAKING, THERE …

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MY DAUGHTER WAS DRIVING MY 2004 TRAILBLAZER ON AN ICY, SLIPPERY ROAD AT 25 -30 MILES PER HOUR, (THE SPEED LIMIT IS 30, IT WAS THE STREET WE LIVE ON) WHEN SHE LOST CONTROL, HIT A TREE AND TOTALED ($22,000.00) THE VEHICLE. THE OFFICER AND I WALKED THE PATH IN THE STREET AND COULD NOT FIND ANY SIGNS OF SKIDDING OR BRAKING, THERE FORE LEADING ME TO BELIEVE NOW THAT THERE WAS A BRAKING FAILURE. UP UNTIL NOW, WHEN I HEARD ABOUT THE BRAKES FAILING DO TO CORROSION FROM ROAD SALT, I ALWAYS THOUGHT IT WAS JUST AN ACCIDENT IN POOR ROAD CONDITIONS. WHEN I FIRST READ THE REPORT OF THE INVESTIGATION I COULDN'T BELIVE IT WAS THE SAME SCENARIO AS HER ACCIDENT. POOR ROAD CONDITIONS, THEREFORE POSSIBLE SALT BUILDUP, A SLOW SPEED AND INABILITY TO STOP. I AM SO GRATEFULL THAT SHE WALKED AWAY WITHOUT A SCRATCH, ALSO CONSIDERING THE AIR BAGS DID NOT DEPLOY, EVEN THOUGH THE FRONT END WAS TOTALED. I AM SURE THIS IS A PROBLEM THAT MUST BE IDENTIFIED FOR THOSE LIVING IN COLDER, NORTHERN STATES.

NHTSA ODI #10135169

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.