NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
44 reportsClear category filter54,000 miles · Mar 20, 2010
Electrical SystemEngine And Engine Cooling
BURNING SMELL COMING FROM THE A/C. SPEED 4 AND 5 BOTH QUIT AND NOW THE WHOLE THING HAS STOPPED WORKING. THIS WILL BE THE THIRD TIME IS HAS BEEN REPLACED AND THE DEALER I TAKE IT TO TELL ME THIS IS A COMMON PROBLEM ON 2005 CHEVY TRAILBLAZERS. BLOWER MOTOR RESISTOR IS BURNT OUT AND THE HARNESS (WHICH WOULD COST ABOUT $200). THEY …
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BURNING SMELL COMING FROM THE A/C. SPEED 4 AND 5 BOTH QUIT AND NOW THE WHOLE THING HAS STOPPED WORKING. THIS WILL BE THE THIRD TIME IS HAS BEEN REPLACED AND THE DEALER I TAKE IT TO TELL ME THIS IS A COMMON PROBLEM ON 2005 CHEVY TRAILBLAZERS. BLOWER MOTOR RESISTOR IS BURNT OUT AND THE HARNESS (WHICH WOULD COST ABOUT $200). THEY SAID THAT THIS WAS ANOTHER COMMON PROBLEM FOR THIS CAR MODEL. *TR
NHTSA ODI #10321155
52,182 miles · Jan 17, 2010
Engine And Engine Cooling
WHEN WE BOUGHT OUR 2005 CHEVY TRAILBLAZER WE HAD TO TURN IT AROUND AND TAKE IT BACK TO THE DEALERSHIP. THE CHECK ENGINE LIGHT CAME ON. ALL THEY DID WAS RESET IT. IT CAME BACK ON SOME TIME LATER, WE TOOK IT BACK TO DEALERSHIP THEY GOT IT WORKED IN AT THE NEAREST CHEVY SHOP, THEY RESET THE LIGHT AND WE WERE TOLD TO BUY A GASCAP FO…
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WHEN WE BOUGHT OUR 2005 CHEVY TRAILBLAZER WE HAD TO TURN IT AROUND AND TAKE IT BACK TO THE DEALERSHIP. THE CHECK ENGINE LIGHT CAME ON. ALL THEY DID WAS RESET IT. IT CAME BACK ON SOME TIME LATER, WE TOOK IT BACK TO DEALERSHIP THEY GOT IT WORKED IN AT THE NEAREST CHEVY SHOP, THEY RESET THE LIGHT AND WE WERE TOLD TO BUY A GASCAP FOR IT. WE BOUGHT THE GAS CAP, LIGHT STAYED OFF UNTIL NOW. WE HAVE TAKEN OUR 2005 CHEVY TRAILBLAZER TO THE LOCAL SHOP THEY HOOKED IT UP TO THE COMPUTER AND FOUND NOTHING WRONG. SO FAR NOTHING HAS BEEN DONE, BUT SINCE THE LIGHT IS ON IT IS A GAS GUZZLER WITH LIGHT ON GETTING 6 MILES TO THE GALLON. WITH GAS AT 2.59 A GALLON THAT'S NOT CHEAP. CHEVROLET DEALER IN TOWN SAYS ITS PROBABLY THE THROTTLE BODY NEEDS CLEANING, AND IT NEEDS A NEW BATTERY. THEY SAY THE THROTTLE BODY IS A COMMON PROBLEM IN THE NEW MODELS, BECAUSE THE GAS IS NOT FIT FOR THE NEWER MODEL VEHICLES. *TR
NHTSA ODI #10300095
104,700 miles · Jan 13, 2010
Engine And Engine Cooling
CAR STALLS WHEN GOING AROUND CORNERS. *TR
NHTSA ODI #10299633
49,000 miles · Dec 12, 2009
Engine And Engine Cooling
I HAVE HAD MY WATER PUMP REPLACED TWICE IN THAT LAST 1.5 YEARS. THE FIRST TIME WAS COVERED UNDER WARRANTY BUT THE NEXT TIME ABOUT 10 MONTH THE DEALERSHIP CLAIM IT DIDN'T WORK AGAIN. JUST TODAY 12/12 I WENT TO DRIVE TO WORK AFTER LETTING MY CAR WARM UP FOR 5 MINUTES I DECIDED TO TURN THE HEAT ON AND NOTHING CAME OUT NOW I HAVE TO…
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I HAVE HAD MY WATER PUMP REPLACED TWICE IN THAT LAST 1.5 YEARS. THE FIRST TIME WAS COVERED UNDER WARRANTY BUT THE NEXT TIME ABOUT 10 MONTH THE DEALERSHIP CLAIM IT DIDN'T WORK AGAIN. JUST TODAY 12/12 I WENT TO DRIVE TO WORK AFTER LETTING MY CAR WARM UP FOR 5 MINUTES I DECIDED TO TURN THE HEAT ON AND NOTHING CAME OUT NOW I HAVE TO CALL AND SEE IF ANYONE CAN LOOK MY AUTO. WORSE BRAND NEW AUTO THAT I HAVE HAD. *TR
NHTSA ODI #10295450
30,000 miles · Nov 14, 2009
Engine And Engine Cooling
I BOUGHT MY 2005 TRAILBLAZER THE SAME YEAR WITH 19+K MILES. I STARTED HAVING IT STALL ON ME AROUND 30K MILES. I TOOK IT TO HAYWARD, CA CHEVY DEALERSHIP BECAUSE IT WAS STILL UNDER WARRANTY. THEY SAID THAT THEY FOUND NOTHING. I TOOK IN AGAIN BECAUSE THE ENGINE LIGHT CAME UP AND THEY SAID THE PROBLEM WAS THE LIGHT ONLY BUT, THAT'S …
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I BOUGHT MY 2005 TRAILBLAZER THE SAME YEAR WITH 19+K MILES. I STARTED HAVING IT STALL ON ME AROUND 30K MILES. I TOOK IT TO HAYWARD, CA CHEVY DEALERSHIP BECAUSE IT WAS STILL UNDER WARRANTY. THEY SAID THAT THEY FOUND NOTHING. I TOOK IN AGAIN BECAUSE THE ENGINE LIGHT CAME UP AND THEY SAID THE PROBLEM WAS THE LIGHT ONLY BUT, THAT'S THE LIGHT THAT WOULD FLASH WHEN IT STALLS. I TOOK THE CAR BACK IN SEVERAL TIMES FOR THE SAME SITUATION. AT THE TIME, I HAD 2 BOYS.....8YRS AND 6YRS AND THIS STARTED TOO BECOME UNRELIABLE BECAUSE I WAS PUTTING THEM AT RISK AND NOT ONLY THAT, I WOULD STALL AND THEN TAKE A FEW MINUTES TO START AGAIN. I'VE BEEN TOLD THAT MAYBE IT STALLS BECAUSE THE ENGINE WAS NOT WARM BUT I KNOW THAT IT CAN'T BE IT BECAUSE A FEW TIMES I WAS ON LONG ROAD TRIPS AND THE ENGINE WOULD STALL ON AND OFF. THIS HAS BEEN AN ONGOING PROBLEM SINCE 06 AND IT'S A HORRIBLE RISK BECAUSE IT'S STALLS WHILE DRIVING. MY KIDS AND I CAN GET HIT FROM BEHIND. I DON'T KNOW WHO ELSE TO REPOST THIS TOO. I BOUGHT ANOTHER CAR 5/07 BECAUSE THIS VEHICLE IS NOT RELIABLE BUT USE IT WHEN I HAVE TO AND UP TO THIS DAY, IT STILL STALLS. *TR
NHTSA ODI #10292159
33,000 miles · Nov 9, 2009
Electrical SystemEngine And Engine Cooling
TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE FUEL GAUGE ON THE INSTRUMENT CONTROL PANEL INACCURATELY DISPLAYS THE VEHICLES FUEL LEVEL. THE VEHICLE WAS TAKEN TO THE DEALERSHIP AND THE FUEL TANK LEVEL SYSTEM WAS REPAIRED. THE REPAIR DID NOT REMEDY THE FAILURE. THE CURRENT MILEAGE WAS 80000. THE FAILURE MILEAGE WAS 33…
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TL* THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE FUEL GAUGE ON THE INSTRUMENT CONTROL PANEL INACCURATELY DISPLAYS THE VEHICLES FUEL LEVEL. THE VEHICLE WAS TAKEN TO THE DEALERSHIP AND THE FUEL TANK LEVEL SYSTEM WAS REPAIRED. THE REPAIR DID NOT REMEDY THE FAILURE. THE CURRENT MILEAGE WAS 80000. THE FAILURE MILEAGE WAS 33000. UPDATED 12/7/09 *CN THE CONSUMER STATED AFTER THE TANK WAS FILLED WITH THE GAS, THERE WAS STILL A RINGING SOUND AS IF THERE WAS NO GAS IN THE VEHICLE. THE FUEL GAUGE WOULD DROP EVEN WHEN THE TANK WAS FULL. THE WATER PUMP AND FAN CLUTCH WAS REPLACED. UPDATED 12/08/09
NHTSA ODI #10291450
Mileage unknown · Nov 8, 2009
Electrical SystemEngine And Engine CoolingExterior Lighting
HEADLIGHTS INTERMITTENTLY 'FLASH' FOR A SECOND DURING FIRST 5-10 MINUTES OF DRIVING. HAVE REPLACED ALTERNATOR AND IDLER PULLEY. GM SUGGESTS LETTING VEHICLE IDLE 1+ MINUTE AFTER START BEFORE ENGAGING GEAR; THIS SOMETIMES WORKS. DANGEROUS AND DISTRACTING TO OTHER MOTORISTS, AS IT APPEARS TO THEM LIKE MY VEHICLE IS FLASHING ITS …
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HEADLIGHTS INTERMITTENTLY 'FLASH' FOR A SECOND DURING FIRST 5-10 MINUTES OF DRIVING. HAVE REPLACED ALTERNATOR AND IDLER PULLEY. GM SUGGESTS LETTING VEHICLE IDLE 1+ MINUTE AFTER START BEFORE ENGAGING GEAR; THIS SOMETIMES WORKS. DANGEROUS AND DISTRACTING TO OTHER MOTORISTS, AS IT APPEARS TO THEM LIKE MY VEHICLE IS FLASHING ITS HIGHBEAMS. *TR
NHTSA ODI #10291410
46,000 miles · May 19, 2009
Engine And Engine CoolingPower Train
I HAVE A 2005 CHEVY TRAILBLAZER WITH 46,000 MILES AND THE TRANSMISSION, IDLER PULLEY, AND WATER PUMP ALREADY HAD TO BE REPLACED. *TR
NHTSA ODI #10269319
58,000 miles · Mar 15, 2009
Engine And Engine Cooling
I HAVE BEEN REPORTING THIS SAME PROBLEM FOR OVER 4 YEARS TO ONSTAR AND GM THAT I HAD ISSUES WITH THE HEADLIGHTS DIMMING UPON STOPPING AT GOING. I HAVE CALLED ONSTAR AND WAS TOLD NOTHING WAS WRONG WITH MY SUV. I HAVE ALSO SAW A ENGINE LIGHT FLASH, CALLED ONSTAR AND NOTHING WAS SHOWING WRONG. TODAY, MY VEHICLE ENGINE LIGHT AND…
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I HAVE BEEN REPORTING THIS SAME PROBLEM FOR OVER 4 YEARS TO ONSTAR AND GM THAT I HAD ISSUES WITH THE HEADLIGHTS DIMMING UPON STOPPING AT GOING. I HAVE CALLED ONSTAR AND WAS TOLD NOTHING WAS WRONG WITH MY SUV. I HAVE ALSO SAW A ENGINE LIGHT FLASH, CALLED ONSTAR AND NOTHING WAS SHOWING WRONG. TODAY, MY VEHICLE ENGINE LIGHT AND BATTERY LIGHT CAME ON AND I WAS INFORMED BY ONSTART THAT THE GENERATOR/ALTERNATOR NEEDS TO BE REPLACED. VEHICLE HAS 58K MILES. *TR
NHTSA ODI #10261938
76,000 miles · Mar 13, 2009
Electrical SystemEngine And Engine CoolingFuel System, Gasoline
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE IGNITION SWITCH FAILED IN HIS VEHICLE AND WAS REPLACED BY THE DEALER. THE RESISTANCE PIG TAIL (WIRING HARNESS), THE FUEL PUMP MODULE, AND THE CLUTCH ALSO FAILED; HOWEVER, THE DEALER STATED THAT THE CONTACT MUST PAY FOR THE REPAIRS. THE DEALER STATED…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE IGNITION SWITCH FAILED IN HIS VEHICLE AND WAS REPLACED BY THE DEALER. THE RESISTANCE PIG TAIL (WIRING HARNESS), THE FUEL PUMP MODULE, AND THE CLUTCH ALSO FAILED; HOWEVER, THE DEALER STATED THAT THE CONTACT MUST PAY FOR THE REPAIRS. THE DEALER STATED THAT THERE WERE NO RECALLS FOR THE VEHICLE AND IT CANNOT BE REPAIRED FOR FREE. THE FAILURE MILEAGE WAS 76,000. 4/01/09 *NJ THE WATER PUMP, PULLEY AND SERPENTINE BELT WAS REPLACED. UPDATED 04/09/09. *JB
NHTSA ODI #10261746
NHTSA investigations
2RQ17002 · 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.
DP10001 · Fuel Level Gauge System Failure
Opened Jan 7, 2010 · Closed May 23, 2011
Status: closed (inferred from source dates) · Fuel System, Other; Fuel System, Other:storage:fuel Gauge System
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
Additional source detail variants (2)
Fuel System, Other
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
Fuel System, Other:storage:fuel Gauge System
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.