NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
261 reports96,000 miles · Sep 2, 2012
Fuel/propulsion System
I JUST GASED THE CHEVROLET TRAILBLAZER AND WAS DRIVING DOWN THE ROAD AND WE COULD SMELL GAS DID NOT THINK MUCH OF IT BECAUSE WE JUST GOT GAS THEN THE CHECK ENGINE LIGHT CAME ON IT WAS A PO442 CODE EVAPORATIVE EMISSION CONTROL SMALL LEAK DETECTED SO I HAVE BEEN SMELLING GAS OFF AND ON AND KEEP GETTING THE PO442 CODE. SO I GO BUY …
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I JUST GASED THE CHEVROLET TRAILBLAZER AND WAS DRIVING DOWN THE ROAD AND WE COULD SMELL GAS DID NOT THINK MUCH OF IT BECAUSE WE JUST GOT GAS THEN THE CHECK ENGINE LIGHT CAME ON IT WAS A PO442 CODE EVAPORATIVE EMISSION CONTROL SMALL LEAK DETECTED SO I HAVE BEEN SMELLING GAS OFF AND ON AND KEEP GETTING THE PO442 CODE. SO I GO BUY A VENT VALVE SOLENOID AND PUT IT ON CLEAR THE CODE I NOTICE GAS AROUND THE INTAKE PIPE ON THE GAS TANK SO I TAKE A CLOSER LOOK AND ITS BROKE HALF WAY AROUND THE FILLER NECK AND THIS IS A RECALL ON CERTAIN VIN #S BUT MINE IS NOT INCLUDED IN THIS RECALL I THINK IT SHOULD BE WHEN YOU ARE DEALING WITH FUEL AND THE AMOUNT OF FUEL THAT CAN LEAK OUT THIS CAN BE A FIRE HAZARD FOR SURE I THINK GM NEEDS TO STEP UP AND TAKE CARE OF THIS PROBLEM ON ALL VEHICLES THAT HAVE THIS PROBLEM INSTEAD OF PICKING AN CHOOSING CERTAIN VIN #S. *TR
NHTSA ODI #10473288
Mileage unknown · Jul 11, 2012
Electrical System
THE ELECTRICAL SYSTEM ON MY 2004 TRAILBLAZER EXT IS NOT OPERATING PROPERLY. THE TACHOMETER DOESN'T REGISTER, NOR DOES THE BATTERY GAUGE AND UNCERTAIN IF THE READING ON THE OIL GAUGE IS ACCURATE. THE FUEL GAUGE IS NOT OPERABLE, THE NEEDLE IS EITHER PASS E(EMPTY) OR PASS F (FULL), I'M CONSTANTLY RE-FUELING FOR FEAR OF RUNNING OUT …
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THE ELECTRICAL SYSTEM ON MY 2004 TRAILBLAZER EXT IS NOT OPERATING PROPERLY. THE TACHOMETER DOESN'T REGISTER, NOR DOES THE BATTERY GAUGE AND UNCERTAIN IF THE READING ON THE OIL GAUGE IS ACCURATE. THE FUEL GAUGE IS NOT OPERABLE, THE NEEDLE IS EITHER PASS E(EMPTY) OR PASS F (FULL), I'M CONSTANTLY RE-FUELING FOR FEAR OF RUNNING OUT OF GAS. WHEN FIRST STARTING THE ENGINE, THE SPEED INDICATOR MIGHT REGISTER CORRECTLY, BUT THEN IT FALLS BELOW 0 MPH WHILE TRAVELING SPEEDS OF 35 TO 55 MPH AND OTHER TIMES IT MAY INDICATE SPEEDS IN EXCESS OF 100 MPH. PROBLEMS WITH THE SPEEDOMETER FIRST STARTED IN JUNE 2012 , I USED A GPS TO KEEP TRACK OF TRAVELING SPEED. AFTERWARDS, THE OTHER GAUGES STARTED TO MALFUNCTION. NO PARTS HAVE BEEN REPAIRED OR REPLACED.VERY CONCERNED ABOUT SAFETY ISSUES, AS I OCCASIONALLY TRANSPORT MY GRANDCHILDREN TO APPOINTMENTS. HAS CHEVROLET MADE ANY AMENDMENTS TO CORRECT THESE PROBLEMS? ASSISTANCE NEEDED PLEASE. *TR
NHTSA ODI #10465250
30,000 miles · May 5, 2012
Vehicle Speed Control
ISSUE ORIGINALLY OCCURRING IN 2008. SPEEDOMETER FAILED...FIRST GETTING STUCK THEN NOT RETURNING TO ZERO. WHEN TURNING VEHICLE ON AGAIN, SPEEDOMETER WOULD SPORADICALLY WORK, THEN GET STUCK, THEN STAY ON ZERO. BROUGHT TO 2 CHEVY DEALERSHIPS WHILE STILL UNDER WARRANTY (PURCHASED EXTENDED WARRANTY ON DATE OF PURCHASE) AND WAS TOLD…
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ISSUE ORIGINALLY OCCURRING IN 2008. SPEEDOMETER FAILED...FIRST GETTING STUCK THEN NOT RETURNING TO ZERO. WHEN TURNING VEHICLE ON AGAIN, SPEEDOMETER WOULD SPORADICALLY WORK, THEN GET STUCK, THEN STAY ON ZERO. BROUGHT TO 2 CHEVY DEALERSHIPS WHILE STILL UNDER WARRANTY (PURCHASED EXTENDED WARRANTY ON DATE OF PURCHASE) AND WAS TOLD "THE PROBLEM COULD NOT BE REPRODUCED", SO NOTHING COULD BE DONE. THE PROBLEM WAS INTERMITTENT, AS WELL AS "SERVICE ENGINE LIGHT" GOING ON FOR PERIODS OF TIME ....AGAIN CHECKED BY GM DEALERSHIPS AND OTHER MECHANICS BUT NOTHING FOUND. HERE WE ARE IN 2012, I RECENTLY STARTED DRIVING THIS VEHICLE AGAIN AS MY HUSBAND WAS DRIVING IT AND APPARENTLY DIDN'T MIND THE SPEEDOMETER NOT WORKING AT TIMES, BUT, WITH HIS UNEXPECTED DEATH IN NOVEMBER, AND MY SON AWAY AT COLLEGE, I HAD PLANNED TO GIVE THE VEHICLE TO MY SON TO TAKE TO COLLEGE, BUT NO SPEEDOMETER IS DEFINITELY A PROBLEM. AS I AM RESEARCHING THIS ISSUE I AM SEEING MANY CONSUMERS HAVE HAD THE SAME EXPERIENCE. WHY HAS THIS NOT BEEN A RECALL BY GM. THERE ARE CLAIMS OF OTHER MECHANICS BEING ABLE TO REPAIR THIS ISSUE AT A PRETTY HEFTY COST. I AM IN NO POSITION TO PAY FOR A REPAIR OF SOMETHING THAT SHOULD HAVE BEEN TAKEN CARE OF UNDER THE WARRANTY WE PURCHASED, WHICH, BY THE WAY WAS NOT CHEAP. IS NOT SAFETY SOMETHING GM HAS ON ITS' PRIORITY LIST. DRIVING WITH NO ABILITY TO KNOW HOW FAST OR SLOW YOU ARE TRAVELING IS DEFINITELY AN ISSUE. I REQUEST AN INVESTIGATION BE LAUNCHED TO DETERMINE THE CAUSE OF THIS DEFECT, WHICH I HAVE NO DOUBT WILL RESULT IN A GM RECALL TO REPAIR THIS SAFETY ISSUE. *TR
NHTSA ODI #10457580
Mileage unknown · May 2, 2012
EngineWheels
I WAS WONDERING HOW COME THERE HASN'T BEEN A RECALL FOR THE CHEVY TRAILBLAZER EXT FOR THE THROTTLE BODY. I SEE THAT THEY HAVE RECALLS ON OTHER CHEVY CARS WITH THE SAME ISSUE. THIS IS A VERY DANGEROUS ISSUE AS WHEN THIS GOES YOU HAVE A REDUCE ENGINE LIGHT THAT COMES ON. WHICH I DIDN'T KNOW WHAT THAT MEANT UNTIL MY CAR WASN'T GOIN…
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I WAS WONDERING HOW COME THERE HASN'T BEEN A RECALL FOR THE CHEVY TRAILBLAZER EXT FOR THE THROTTLE BODY. I SEE THAT THEY HAVE RECALLS ON OTHER CHEVY CARS WITH THE SAME ISSUE. THIS IS A VERY DANGEROUS ISSUE AS WHEN THIS GOES YOU HAVE A REDUCE ENGINE LIGHT THAT COMES ON. WHICH I DIDN'T KNOW WHAT THAT MEANT UNTIL MY CAR WASN'T GOING ANY MORE THAN 20 MPH. THIS IS VERY DANGEROUS TO BE ON THE ROAD LIKE I WAS AND CAN'T SPEED UP OR BETTER YET TRYING TO TURN WHEN YOU DON'T HAVE THE POWER TO DO SO. ALSO, I SEE THAT THERE WERE ALSO ALOT OF ISSUES WITH THE SPEEDOMETER. WHICH ALSO I HAD THAT PROBLEM HAS TO PAY TOO MUCH MONEY TO GET THIS FIXED. AS HOW THEY WOULD SAY THEIR ARE MANUFACTURE PARTS WHICH DEFINITELY HURTS YOUR POCKETS. IF THEY KNOW THAT THEY HAVE THESE ISSUES THEY REALLY NEED TO RECTIFY BECAUSE BOTH OF THESE ISSUES CAUSE SOME SERIOUS PROBLEMS ON THE ROAD. I KNOW THEY ARE WEAR AND TEAR ON CARS / TRUCKS BUT IF YOU HAVE TOO MANY PEOPLE HAVING THE SAME PROBLEMS I THINK THEY SHOULD DO SOMETHING TO RESOLVE THESE ISSUES. *JS
NHTSA ODI #10457180
Mileage unknown · Mar 31, 2012
Fuel System, Gasoline
TANK IS SUBJECT TO CRACKING CAUSING ROUGH IDLE VEHICLE SPEED SURGES AND GAS VAPORS IN THE VEHICLE AND AROUND THE VEHICLE. VEHICLE WILL FAIL EMISSIONS. MANUFACTURE RECALL WAS PUT OUT BUT VEHICLE HAS TO BE MADE AT A CERTAIN FACULTY AND MINE WASN'T, BUT HAS THE SAME PROBLEM AS THE RECALLED CARS. *JS
NHTSA ODI #10453643
146,000 miles · Mar 7, 2012
Electrical SystemEngine And Engine CoolingPower Train
CAR FELT "STUCK" IN GEAR, WOULDN'T ACCELERATE, LOW ON TRANSMISSION FLUID. ADDED MORE FLUID, REPLACED SPEED SENSOR, CAMSHAFT & CRANKSHAFT SENSORS. STILL HAVING ISSUES WITH RPMS GOING HIGH, CAR SLAMMING FROM ONE GEAR INTO ANOTHER. ALSO CANNOT RUN HEAT WHILE DRIVING, FAN DRAWS POWER & CAUSES ENGINE TO STALL OUT. CAR ALSO BURNING TH…
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CAR FELT "STUCK" IN GEAR, WOULDN'T ACCELERATE, LOW ON TRANSMISSION FLUID. ADDED MORE FLUID, REPLACED SPEED SENSOR, CAMSHAFT & CRANKSHAFT SENSORS. STILL HAVING ISSUES WITH RPMS GOING HIGH, CAR SLAMMING FROM ONE GEAR INTO ANOTHER. ALSO CANNOT RUN HEAT WHILE DRIVING, FAN DRAWS POWER & CAUSES ENGINE TO STALL OUT. CAR ALSO BURNING THROUGH GAS VERY QUICKLY. *TR
NHTSA ODI #10450579
70,000 miles · Feb 14, 2012
Electrical System
FUEL GAUGE STAYS ON EMPTY AND OIL TEMPERATURE GAUGE STAYS AT 260 DEGREES. THE SPEEDOMETER STICKS AND RESETS INCORRECTLY AT RANDOM INTERVALS. *TR
NHTSA ODI #10447878
90,000 miles · Jan 16, 2012
Steering
IN COLD WEATHER, THE STEERING FLUID BECOMES FILLED WITH AIR. THEN IT FOAMS AND BOILS OUT OF THE PUMP.THE CAR IS IMPOSSIBLE TO STEER. IT HAS DONE IT TWICE. *TR
NHTSA ODI #10443958
43,400 miles · Jan 9, 2012
Electrical System
VEHICLE WAS BEING DRIVEN WHEN ALL DASH GAUGES FAILED. PARTICULARLY CONCERNING WAS THE FAILURE OF THE SPEEDOMETER. GM HAS ADMITTED THAT OTHER VEHICLES HAVE HAD THIS PROBLEM AND HAVE PAID FOR AND INSTALLED REPLACEMENT DASH CLUSTERS ON SOME MODELS. THE 2004 TRAILBLAZER IS NOT COVERED AS THERE HAS NOT BEEN ENOUGH OCCURRENCES OF I…
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VEHICLE WAS BEING DRIVEN WHEN ALL DASH GAUGES FAILED. PARTICULARLY CONCERNING WAS THE FAILURE OF THE SPEEDOMETER. GM HAS ADMITTED THAT OTHER VEHICLES HAVE HAD THIS PROBLEM AND HAVE PAID FOR AND INSTALLED REPLACEMENT DASH CLUSTERS ON SOME MODELS. THE 2004 TRAILBLAZER IS NOT COVERED AS THERE HAS NOT BEEN ENOUGH OCCURRENCES OF INSTRUMENT CLUSTER FAILURE REPORTED. *TR
NHTSA ODI #10443239
144,000 miles · Dec 28, 2011
Fuel System, Gasoline
MY VEHICLE IS CURRENTLY PARKED IN MY FAMILY'S GARAGE, AS I AM EXPERIENCING A STRONG GAS SMELL. THERE IS NO VISIBLE LEAK, BUT I DO NOT DARE TO TRANSPORT MY CHILDREN IN THE VEHICLE UNTIL I CAN FIND WHAT THE GAS SMELL IS ORIGINATING FROM. *TR
NHTSA ODI #10441453
NHTSA investigations
3RQ17002 · 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.
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