NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports88,000 miles · Jan 17, 2011
Electrical System
THE PROBLEM IS ON MY 2004 CHEVROLET TRAILBLAZER. THE ENTIRE DASH GAUGES MALFUNCTION OCCASIONALLY, FROM SPEEDOMETER TO BATTERY GAUGE TO OIL PRESSURE GAUGE TO WATER TEMP GAUGE TO RPM GAUGE. I AM ONE OF THOUSANDS OF TRAILBLAZER OWNERS WHO HAVE THIS PROBLEM NOT ONLY IN THE USA, BUT AROUND THE WORLD, JUST READ THE FORUM ON EDMUNDS.…
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THE PROBLEM IS ON MY 2004 CHEVROLET TRAILBLAZER. THE ENTIRE DASH GAUGES MALFUNCTION OCCASIONALLY, FROM SPEEDOMETER TO BATTERY GAUGE TO OIL PRESSURE GAUGE TO WATER TEMP GAUGE TO RPM GAUGE. I AM ONE OF THOUSANDS OF TRAILBLAZER OWNERS WHO HAVE THIS PROBLEM NOT ONLY IN THE USA, BUT AROUND THE WORLD, JUST READ THE FORUM ON EDMUNDS.COM AND YOU WILL SEE. I USUALLY TEMPORARILY FIX THIS PROBLEM BUT TURNING THE VEHICLE ON AND OFF UNTIL THE GAUGES FULLY RESET, BUT THAT PUTS A LOT OF STRAIN ON THE STARTER. PLEASE OPEN AN INVESTIGATION TO TRIGGER A RECALL BECAUSE CHEVY DEALERS WANT US OWNERS TO SHELL OUT $100 TO FIGURE OUT THE PROBLEM WE ALREADY KNOW AND THEN WANT TO GOUGE US FOR ANOTHER $700-$1000 TO FIX. THAT IS TOTALLY UNCALLED FOR, FOR A PART ON THE VEHICLE WHICH IS VITAL TO DRIVERS, THE INSTRUMENT GAUGES. *TR
NHTSA ODI #10376898
60,000 miles · Jan 11, 2011
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE SPEEDOMETER ALWAYS DISPLAYED AN IMPROPER READING. THE IMPROPER READINGS CAN VARY FROM 0 TO 120 MPH AND ALL OF THE SPEEDS BETWEEN. THE FAILURE WAS NOT DIAGNOSED BY THE DEALER OR A LOCAL MECHANIC. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE …
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE SPEEDOMETER ALWAYS DISPLAYED AN IMPROPER READING. THE IMPROPER READINGS CAN VARY FROM 0 TO 120 MPH AND ALL OF THE SPEEDS BETWEEN. THE FAILURE WAS NOT DIAGNOSED BY THE DEALER OR A LOCAL MECHANIC. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 78,000.
NHTSA ODI #10375591
68,669 miles · Jan 10, 2011
Unknown Or Other
IN 2008, ONE DAY I STARTED MY VEHICLE AND NOTICED THE OIL GAUGE INDICATOR DID NOT REGISTER. THAT DAY I CONTINUED DRIVING WITHOUT THE GAUGE OPERATING. LATER THAT WEEK I TOOK IT A MECHANIC, WHO INSTRUCTED ME TO TAKE IT TO THE DEALER. HE SUSPECTED THAT IT WAS THE INSTRUMENT PANEL. I DID NOT TAKE IT TO THE DEALER, BECAUSE IT WAS N…
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IN 2008, ONE DAY I STARTED MY VEHICLE AND NOTICED THE OIL GAUGE INDICATOR DID NOT REGISTER. THAT DAY I CONTINUED DRIVING WITHOUT THE GAUGE OPERATING. LATER THAT WEEK I TOOK IT A MECHANIC, WHO INSTRUCTED ME TO TAKE IT TO THE DEALER. HE SUSPECTED THAT IT WAS THE INSTRUMENT PANEL. I DID NOT TAKE IT TO THE DEALER, BECAUSE IT WAS NOT MAJOR. HOWEVER, IN LATER MONTHS THE TACHOMETER FAILED. IN 2010 I DID SOME RESEARCH ON THE INSTRUMENT PANEL ON THE CHEVY TRAILBLAZER AND FOUND MANY ACCOUNTS OF FAILURE BY OTHERS. I ALSO WANT TO MENTION THAT THE GAS GAUGE HAS FAILED ON OCCASION. CURRENTLY, MY TACHOMETER AND OIL GAUGE DOES NOT WORK. I ALONG WITH OTHER DRIVERS WANT CHEVROLET TO TAKE RESPONSIBILITY FOR THE FAILURE OF THEIR PRODUCT, WHICH THEY KNOW DOES NOT OPERATE AS IT SHOULD.
NHTSA ODI #10376143
87,240 miles · Jan 7, 2011
Vehicle Speed Control
SPEEDOMETER ON MY 2004 TRAILBLAZER HAS BECOME ERRATIC. SOMETIME NO SPEED. SOMEITMES STUCK ON 90MPH WHETHER I'M MOVING OR NOT. CURRENTLY STUCK ABOVE THE 120MPH MARK.
NHTSA ODI #10375903
87,240 miles · Jan 4, 2011
Electrical System
SPEEDOMETER ON MY 2004 TRAILBLAZER HAS BECOME ERRATIC. SOMETIMES NO SPEED. SOMETIMES STUCK ON 90MPH WHETHER I'M MOVING OR NOT. VEHICLE HAS 87240 MILES. VIN [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10374077
60,000 miles · Jan 3, 2011
Electrical System
TACHOMETER AND SPEEDOMETER ON MY 2004 CHEVY TRAILBLAZER DO NOT WORK. PROBLEM STARTED INTERMITTENTLY AT APPROXIMATELY 60,000 MILES. INITIALLY THE PROBLEM ONLY OCCURRED AFTER USING CRUISE CONTROL. HOWEVER, THE VEHICLE NOW HAS OVER 70,000 MILES AND BOTH GAUGES DO NOT WORK AT ALL. VEHICLE HASN EVER BEEN IN ANY ACCIDENT TO CAUSE …
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TACHOMETER AND SPEEDOMETER ON MY 2004 CHEVY TRAILBLAZER DO NOT WORK. PROBLEM STARTED INTERMITTENTLY AT APPROXIMATELY 60,000 MILES. INITIALLY THE PROBLEM ONLY OCCURRED AFTER USING CRUISE CONTROL. HOWEVER, THE VEHICLE NOW HAS OVER 70,000 MILES AND BOTH GAUGES DO NOT WORK AT ALL. VEHICLE HASN EVER BEEN IN ANY ACCIDENT TO CAUSE THIS ISSUE. SPEEDOMETER DIAL NOW READS PAST 120 MPH EVEN WHEN CAR IS STOPPED. FUEL GAUGE ALSO HAS RECENTLY STARTED TO FAIL. *TR
NHTSA ODI #10374020
101,200 miles · Jan 3, 2011
Electrical System
SPEEDOMETER HAS BECOME VERY ERRATIC. SHOWS TOO FAST AND OTHER TIMES SHOWS TO SLOW BY FROM 5 TO 30 MPH. VERY UNSAFE. CHEVROLET DEALER SAID BEEN NO PROBLEMS NEED TO COME IN AND DIAGNOSIS. THIS HAS BEEN OCCURRING THE HOLE MONTH OF DECEMBER 2010, AND NOW IN JAN. 2011. *TR
NHTSA ODI #10373989
81,000 miles · Dec 30, 2010
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 50 MPH THE OIL PRESSURE GAUGE AND THE TACHOMETER ON THE INSTRUMENT CLUSTER STOPPED WORKING PROPERLY. THE VEHICLE HAD NOT BEEN TAKEN TO THE DEALER FOR THE FAILURE. THE FAILURES WERE INTERMITTENT AT FIRST AND RECENTLY STOPPED WORKING. THE VEHICLE WAS NOT…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 50 MPH THE OIL PRESSURE GAUGE AND THE TACHOMETER ON THE INSTRUMENT CLUSTER STOPPED WORKING PROPERLY. THE VEHICLE HAD NOT BEEN TAKEN TO THE DEALER FOR THE FAILURE. THE FAILURES WERE INTERMITTENT AT FIRST AND RECENTLY STOPPED WORKING. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS UNAVAILABLE. THE FAILURE MILEAGE WAS 81,000 AND THE CURRENT MILEAGE WAS 83,000.
NHTSA ODI #10373529
92,000 miles · Dec 29, 2010
Electrical System
SPEEDOMETER STUCK/INSTRUMENT PANEL ON CHRISTMAS DAY WE WERE TRAVELING TO FAMILIES HOUSE TO CELEBRATE THE HOLIDAYS. 1.5 HOURS INTO THE TRIP, THE SPEEDOMETER WENT CRAZY AND WAS AT 90 WHEN WE WERE GOING 65. PULLED OVER AND WHEN WE STOPPED IT INCREASED TO 120 MPH. SINCE WE HAD ANOTHER 3.5 HRS OF OUR TRIP AND IT WAS UNSURE EXACTL…
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SPEEDOMETER STUCK/INSTRUMENT PANEL ON CHRISTMAS DAY WE WERE TRAVELING TO FAMILIES HOUSE TO CELEBRATE THE HOLIDAYS. 1.5 HOURS INTO THE TRIP, THE SPEEDOMETER WENT CRAZY AND WAS AT 90 WHEN WE WERE GOING 65. PULLED OVER AND WHEN WE STOPPED IT INCREASED TO 120 MPH. SINCE WE HAD ANOTHER 3.5 HRS OF OUR TRIP AND IT WAS UNSURE EXACTLY WHAT WAS WRONG (SINCE THERE WERE NO DEALERSHIP/SERVICE STATIONS OPEN), WE TURNED AROUND AND WENT HOME. NICE CHRISTMAS THAT WE HAD, NOT. ON MONDAY (THE NEXT DAY THE DEALERSHIP WAS OPEN) I CALLED TO GET AN APPT. AND COULDN'T' GET IN UNTIL TUESDAY. WENT IN TUESDAY AND OF COURSE CHARGED ME A DIAGNOSTIC FEE, WHEN I COULD TELL FROM SEARCHING THE INTERNET WHAT WAS WRONG (BY NOW THE SPEEDOMETER WAS STRAIGHT DOWN BETWEEN 0 AND 120). 1.5 HRS LATER THE DEALERSHIP TELLS ME IT IS THE INSTRUMENT PANEL (SURPRISE, SURPRISE) AND THAT THEY WOULD HAVE TO ORDER SINCE THEY HAVE NONE IN STOCK. IT WOULD TAKE 4-5 BUSINESS DAYS. THE EARLIEST WE'RE LOOKING AT GETTING IS NEXT WEEK, NOW 10 DAYS PAST THE DAY IT HAPPENED. I ASKED THE DEALERSHIP FOR A LOANER AND THEY OFFERED ME ENTERPRISE RENTAL FOR $40/DAY (MY EXPENSE). THEY COULD OFFER ME NOTHING ELSE, SENDING ME ON MY WAY. OK, CHEVY...SINCE THIS IS A HUGE PROBLEM, THE LEAST YOU COULD DO IS STOCK DEALERSHIPS WITH THE PANELS, ESPECIALLY SINCE THIS IS A LARGE DEALERSHIP. IT IS NOT SAFE TO BE DRIVING AROUND WITH NO WORKING SPEEDOMETER. DID I MENTION THIS IS ALSO MY VACATION WEEK....NICE, BEING STUCK AT HOME CAUSE YOU HAVE AN INOPERABLE VEHICLE. CHEVY NEEDS TO STEP UP TO THE PLATE AND MAKE THIS RIGHT WITH THEIR COSTUMERS. I HAVE BEEN A FAITHFUL OWNER SINCE 1994. A $415 PART/PLUS LABOR IS RIDICULOUS WHEN THERE HAVE BEEN SO MANY COMPLAINTS, YOU NEED TO RECALL THIS. *TR
NHTSA ODI #10373210
31,101 miles · Dec 28, 2010
Power Train
I HAVE A 2004 TRAILBLAZER I BOUGHT NEW IT ONLY HAS 31100 MILES ON IT AND IS IN GREAT CONDITION AND THE TRANSMISSION HAS GONE OUT ON IT ..THEIR ARE. MANY MANY COMPLAINTS ABOUT SAME THING... SOME WITH LESS MILES AND SOME WITH MORE...I CAN NOT AFFORD TO PAY 3000 DOLLARS FOR A FAULTY TRANSMISSION WHEN IT IS OBVIOUS IT IS SOMETHING T…
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I HAVE A 2004 TRAILBLAZER I BOUGHT NEW IT ONLY HAS 31100 MILES ON IT AND IS IN GREAT CONDITION AND THE TRANSMISSION HAS GONE OUT ON IT ..THEIR ARE. MANY MANY COMPLAINTS ABOUT SAME THING... SOME WITH LESS MILES AND SOME WITH MORE...I CAN NOT AFFORD TO PAY 3000 DOLLARS FOR A FAULTY TRANSMISSION WHEN IT IS OBVIOUS IT IS SOMETHING TO DO WITH GM TRANSMISSIONS....AN INVESTIGATION NEEDS TO BE DONE I AM A HUSBAND A FATHER AND BOTH ME AND MY WIFE WORK FULL TIME BUT WE CAN NOT AFFORD THIS AS MANY OTHER PEOPLE CANT AND CHEVY WILL NOT STICK UP FOR THEIR VEHICLES,,,RECALLS MUST BE DONE SO THE WORKING CLASS CAN SURVIVE WITHOUT THIS VEHICLE I WILL LOSE MY JOB AND GM WILL GET RICHER AND RICHER TO BAD THEY DON'T MAKE CARS LIKE THEY USE TOO...ALL I DID WAS GET IN MY CAR START IT LET IT WARM UP AND WENT TO PUT IT IN REVERSE AND CLUNK AND JUST GRINDING THEIR MUST BE SOMETHING DONE I AM DOING RESEARCH IT LOOKS LIKE THIS TRANSMISSION HAS BEEN FAULTY SINCE THE 2002 TRAILBLAZER CAME OUT BUT NOTHING HAS BEEN DONE ABOUT IT YET.... *TR
NHTSA ODI #10373151
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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