NHTSA owner reports · September 18, 2026 snapshot.
Engine And Engine Cooling complaints
27 reportsClear category filter92,000 miles · Jan 31, 2011
Engine And Engine CoolingFuel System, Gasoline
ON 1/31/2011 MY 2005 GMC ENVOY SHOWED MY GAS WAS DOWN TO A QUARTER OF A TANK. I STOPPED TO FILL UP BEFORE A SNOW STORM CAME IN AND PUT 16 GALLONS OF UNLEADED FUEL INTO MY TANK. IMMEDIATELY AFTER MY GAS GAUGE WENT TO EMPTY AND MY GAS LIGHT CAME ON. IT WENT UP TO A QUARTER OF A TANK AND THEN WENT BACK DOWN AGAIN. IT IS STILL SHOWI…
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ON 1/31/2011 MY 2005 GMC ENVOY SHOWED MY GAS WAS DOWN TO A QUARTER OF A TANK. I STOPPED TO FILL UP BEFORE A SNOW STORM CAME IN AND PUT 16 GALLONS OF UNLEADED FUEL INTO MY TANK. IMMEDIATELY AFTER MY GAS GAUGE WENT TO EMPTY AND MY GAS LIGHT CAME ON. IT WENT UP TO A QUARTER OF A TANK AND THEN WENT BACK DOWN AGAIN. IT IS STILL SHOWING EMPTY, WITH THE GAS LIGHT ON, AND I KNOW IT HAS A FULL TANK OF GAS. *TR
NHTSA ODI #10379783
60,000 miles · Apr 20, 2010
Engine And Engine Cooling
2005 GMC ENVOY WOULD NOT PASS STATE INSPECTION AFTER 3RD YEAR; FUEL METER NO LONGER WORKS. DEALER WANTED $400 TO REPAIR. DEALER WANTED $1600 TO REPLACE AIR INJECTION UNIT AND FUEL SENSOR AND THERMOMETER SO CAR COULD PASS INSPECTION. I HAD ALL THE ITEMS REPAIRED AND ENGINE LIGHT STILL COMES ON. IT HAS APPROX 60K MILES. THE DE…
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2005 GMC ENVOY WOULD NOT PASS STATE INSPECTION AFTER 3RD YEAR; FUEL METER NO LONGER WORKS. DEALER WANTED $400 TO REPAIR. DEALER WANTED $1600 TO REPLACE AIR INJECTION UNIT AND FUEL SENSOR AND THERMOMETER SO CAR COULD PASS INSPECTION. I HAD ALL THE ITEMS REPAIRED AND ENGINE LIGHT STILL COMES ON. IT HAS APPROX 60K MILES. THE DEALER IS REFUSING TO REPAIR AIR INJECTION UNIT STATING IT IS NOT UNDER WARRANTY. WHEN I PURCHASED CAR IT CAME WITH 100K WARRANTY FOR DRIVE TRANE. AFTER TAKING TO CERTIFIED GM MECHANIC WHO FIXED EVERYTHING ON LIST THE CAR STILL WILL NOT PASS INSPECTION BECAUSE THE AIR INJECTION UNIT CONTINUES TO TAKE ON WATER. THIS CAR IS A LEMON AND GM SHOULD NOT BE ABLE TO GET AWAY WITH THIS. I CANNOT AFFORD TO GET IT REPAIRED THEREFORE, I AM SUBJECT TO GET A TICKET. I STILL OWE MONEY AND CANNOT TRADE IT IN. HOW MUCH LONGER ARE AMERICAN MADE CAR MANUFACTURERS GOING TO SCREW THE AMERICAN PEOPLE!!!??? I WILL NEVER PURCHASE ANOTHER AMERICAN MADE CAR AS LONG AS I LIVE!!! I HAVE NOT EVEN MENTIONED THE FACT THAT THE CAR LOSS COMPLETE POWER WHILE I WAS DRIVING AT 60 MILES/HOUR ON THE TRNPK. EVERYTHING SHUT COMPLETELY DOWN. I COULD NOT STEER. FORTUNATELY THERE WERE NO CURVES AND I WAS ABLE TO DRIVE TO SIDE OF ROAD AS THE CAR SLOWLY CAME TO A HALT! THERE MUST BE A LAW AGAINST THIS!!! WHAT RECOURSE DO I (WE) HAVE???? *TR
NHTSA ODI #10326739
Mileage unknown · Aug 20, 2009
Engine And Engine Cooling
2005 GMC ENVOY. *TR
NHTSA ODI #10281217
2,900 miles · Oct 24, 2008
Electrical SystemEngine And Engine CoolingExterior Lighting
TL*THE CONTACT OWNS A 2005 GMC ENVOY. THE CONTACT STATED THAT HE WAS EXPERIENCING ISSUES WITH THE HEADLIGHTS. WHEN HIS WIFE WOULD DRIVE THE VEHICLE AT 50 MPH, THE HEADLIGHTS WOULD GET DIMMER AND DIMMER AND THEN BRIGHTEN AGAIN. ON ONE OCCASION, THE LIGHTS TURNED OFF COMPLETELY AND HIS WIFE HAD TO DRIVE HOME WITH THE HAZARD LIG…
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TL*THE CONTACT OWNS A 2005 GMC ENVOY. THE CONTACT STATED THAT HE WAS EXPERIENCING ISSUES WITH THE HEADLIGHTS. WHEN HIS WIFE WOULD DRIVE THE VEHICLE AT 50 MPH, THE HEADLIGHTS WOULD GET DIMMER AND DIMMER AND THEN BRIGHTEN AGAIN. ON ONE OCCASION, THE LIGHTS TURNED OFF COMPLETELY AND HIS WIFE HAD TO DRIVE HOME WITH THE HAZARD LIGHTS FLASHING. THE ISSUE OCCURRED INTERMITTENTLY. THE CONTACT TOOK THE VEHICLE TO THE DEALER AT LEAST FOUR TIMES AND THEY CHANGED THE SWITCHES AND RECALIBRATED THE LIGHTS. THE REPAIRS CAUSED OTHER FAILURES; THEREFORE, THEY RECALIBRATED TO THE ORIGINAL LIGHTS. THE DEALER STATED THAT THERE WAS NO REMEDY FOR THE FAILURE. THE MANUFACTURER STATED THAT THEY WOULD START A CASE FOR HIM AND CALL HIM BACK. THE CURRENT MILEAGE WAS APPROXIMATELY 41,000 AND FAILURE MILEAGE WAS APPROXIMATELY 23,000. UPDATED 11/14/08 *CN THE CHECK ENGINE LIGHT ILLUMINATED. THE DEALER REPLACED THE O2 SENSOR. UPDATED 11/18/08. *JB
NHTSA ODI #10246645
29,000 miles · May 1, 2008
Engine And Engine Cooling
THE VEHICLE HAS A SEVERE HESITATION WHEN THE ENGINE IS UNDER A LOAD. THIS HAS BEEN CALLED A SURGE BY ONE MECHANIC. HAD TRUCK 2 MONTHS BOUGHT IT USED WITH 29,000 MILES IT'S A GMC ENVOY. WHILE GOING UP HILLS ON THE HIGHWAY AT 60 MPH, THE ENGINES STARTS TO MISS/SURGE/HESITATE CAUSING THE VEHICLE TO LOSE SPEED AND RPM'S. AS YOU SLOW…
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THE VEHICLE HAS A SEVERE HESITATION WHEN THE ENGINE IS UNDER A LOAD. THIS HAS BEEN CALLED A SURGE BY ONE MECHANIC. HAD TRUCK 2 MONTHS BOUGHT IT USED WITH 29,000 MILES IT'S A GMC ENVOY. WHILE GOING UP HILLS ON THE HIGHWAY AT 60 MPH, THE ENGINES STARTS TO MISS/SURGE/HESITATE CAUSING THE VEHICLE TO LOSE SPEED AND RPM'S. AS YOU SLOWLY PRESS THE GAS PEDAL TO GAIN SPEED THE ENGINE MISSES MORE. I HAD THIS TRUCK TO THE DEALER 6 TIMES FOR THIS PROBLEM. THEY CHANGED THE FUEL MODULE ON THE ENGINE THEN REBUILT THE TRANSMISSION. I WAS TOLD BY THEM IT'S THE CHARACTERISTICS OF THE VEHICLE. *TR
NHTSA ODI #10226426
45,000 miles · Apr 16, 2008
Engine And Engine Cooling
EMISSIONS LIGHT WOULD COME ON FOR A DAY OR TWO AND THEN GO OFF FOR WEEKS. WHEN HAVING VEHICLE 50,000 MILE SERVICE THEY HOOKED IT UP TO THE COMPUTER AND GOT BOTH A P0128 BAD THERMOSTAT CODE AND A P0463 FAN CLUTCH FAILURE CODE. THIS CARE IS LESS THAN 3 YEARS OLD AND SHOULD NOT HAVE THESE PROBLEMS. THE THERMOSTAT WAS REPLACES AS…
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EMISSIONS LIGHT WOULD COME ON FOR A DAY OR TWO AND THEN GO OFF FOR WEEKS. WHEN HAVING VEHICLE 50,000 MILE SERVICE THEY HOOKED IT UP TO THE COMPUTER AND GOT BOTH A P0128 BAD THERMOSTAT CODE AND A P0463 FAN CLUTCH FAILURE CODE. THIS CARE IS LESS THAN 3 YEARS OLD AND SHOULD NOT HAVE THESE PROBLEMS. THE THERMOSTAT WAS REPLACES AS WELL AS THE FAN CLUTCH AT GREAT EXPENSE AS THE EXTENDED WARRANTY DID NOT COVER THE THERMOSTAT OR THE FLUSH OF THE COOLANT SYSTEM THAT WENT ALONG WITH REPLACING SAID THERMOSTAT. *TR
NHTSA ODI #10224758
3,809 miles · Sep 17, 2007
Engine And Engine CoolingEquipmentPower Train
TL*THE CONTACT OWNS A 2005 GMC ENVOY. THE CONTACT STATED THAT THE ENGINE MADE A LOUD KNOCKING NOISE WHEN DRIVING. WHILE DRIVING UPHILL, THE VEHICLE DRAMATICALLY DECELERATES AS IF THE ENGINE WAS STALLING. THE ENGINE AND OIL LIGHTS ILLUMINATED ON THE INSTRUMENT CONTROL PANEL. SHE TOOK THE VEHICLE TO THE DEALER FOR AN OIL CHANG…
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TL*THE CONTACT OWNS A 2005 GMC ENVOY. THE CONTACT STATED THAT THE ENGINE MADE A LOUD KNOCKING NOISE WHEN DRIVING. WHILE DRIVING UPHILL, THE VEHICLE DRAMATICALLY DECELERATES AS IF THE ENGINE WAS STALLING. THE ENGINE AND OIL LIGHTS ILLUMINATED ON THE INSTRUMENT CONTROL PANEL. SHE TOOK THE VEHICLE TO THE DEALER FOR AN OIL CHANGE, BUT THE OIL LIGHT REMAINED ILLUMINATED. SHE TOOK THE VEHICLE TO A LOCAL DEALER FOUR TIMES AND THEY REPROGRAMMED THE P.C. ANOTHER DEALER STATED THAT THE ENGINE DRAGS WHEN TRAVELING UPHILL, WHICH WAS PROBABLY DUE TO THE CLUTCH FANS. THE CONTACT ALSO STATED THAT THE AIR CONDITIONING SYSTEM DOES NOT WORK. AFTER ALL FOUR REPAIRS WERE PERFORMED, HER VEHICLE CONTINUES TO EXPERIENCE THE SAME FAILURES. SHE CONTACTED THE MANUFACTURER AND THEY STATED THAT THEY WOULD NOT PROVIDE ANY FINANCIAL ASSISTANCE BECAUSE THE EXTENDED WARRANTY EXPIRED. THE SPEED WAS UNKNOWN. THE FAILURE MILEAGE WAS 3,809 AND CURRENT MILEAGE WAS 82,000.
NHTSA ODI #10203265
11,373 miles · Apr 15, 2007
Electrical SystemEngine And Engine CoolingFuel System, Gasoline
VEHICLE HAS INTERMITTENT THROTTLE PROBLEM THAT CAUSES THE THROTTLE TO SURGE AND THE HEADLIGHTS TO GO DIM TO BRIGHT AND DASH LIGHTS TO GO DIM TO BRIGHT. THIS CONDITION HAPPENS INTERMITTENTLY, AND THE DEALERSHIP STATES THERE IS NO PROBLEM. THIS CONDITION IS MOST DANGEROUS WHEN DRIVING IN CONFINED SPACES SUCH AS PARKING LOTS. I…
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VEHICLE HAS INTERMITTENT THROTTLE PROBLEM THAT CAUSES THE THROTTLE TO SURGE AND THE HEADLIGHTS TO GO DIM TO BRIGHT AND DASH LIGHTS TO GO DIM TO BRIGHT. THIS CONDITION HAPPENS INTERMITTENTLY, AND THE DEALERSHIP STATES THERE IS NO PROBLEM. THIS CONDITION IS MOST DANGEROUS WHEN DRIVING IN CONFINED SPACES SUCH AS PARKING LOTS. I HAVE TAKEN THIS PROBLEM TO THE SELLING DEALERSHIP FOUR TIMES SINCE JULY 2006 AND CONTINUE TO BE TOLD THERE WAS NO PROBLEM.*AK
NHTSA ODI #10187889
3,829 miles · Feb 14, 2007
Air BagsElectrical SystemEngine And Engine Cooling
TL*- THE CONTACT OWNS A 2003 GMC ENVOY. THE HEADLIGHTS, DASHBOARD, AND TAIL LIGHTS FLASHED RANDOMLY AT ANY SPEED, THIS FAILURE STARTED IN OCTOBER OF 2006. THE WEATHER AND TIME OF DAY WERE NOT FACTORS IN THE FAILURE. THE DEALERSHIP SAID THAT THE FAILURE WAS NORMAL. THERE WERE TSBS FOR THE FAILURE, AS WELL AS FOR SEVERAL OTHER…
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TL*- THE CONTACT OWNS A 2003 GMC ENVOY. THE HEADLIGHTS, DASHBOARD, AND TAIL LIGHTS FLASHED RANDOMLY AT ANY SPEED, THIS FAILURE STARTED IN OCTOBER OF 2006. THE WEATHER AND TIME OF DAY WERE NOT FACTORS IN THE FAILURE. THE DEALERSHIP SAID THAT THE FAILURE WAS NORMAL. THERE WERE TSBS FOR THE FAILURE, AS WELL AS FOR SEVERAL OTHERS. THE FUEL NECK HAD BEEN REPLACED TWICE DUE TO A DESIGN CHANGE. THE SEAL AROUND THE LICENSES PLACE HOLDER CAME LOOSE AND HAD TO BE REPLACED. THE BRAKE PEDAL WAS SQUEAKING, THE CONTACT TOOK VEHICLE FOR SERVICE ON THREE OCCASIONS, AND REPLACED THE SERPENTINE BELT TWICE, AN AIRBAG SENSOR, THE REAR WIPER ARM, THE OXYGEN SENSOR TWICE ,THE FIRST TIME AT 7000 MILES. THERE WERE CRUISE CONTROL FAILURES, WHEN THE CONTACT TRIED TO ACCELERATE IT HESITATED AND THEN SURGED. THE WEATHER STRIPPING ON THE REAR DOORS HAS BEEN REPAIRED THREE TIMES. THE ABS WOULD SKIP ON A BUMPY ROAD AND WOULD NOT ENGAGE. AT ONE POINT THE CONTACT COULD SMELL FUEL IN THE PASSENGER COMPARTMENT AND VEHICLE HAD VERY POOR GAS MILEAGE, THE DEALER STATED THAT THERE WAS NOTHING WRONG WITH THE VEHICLE, BUT AIR VALVE BECAME STUCK AND WOULD NOT CLOSE. THE REAR DOOR HINGES SQUEAKED. THIS WINTER IT WON'T GO TO FULL VOLTAGE UNTIL A MINUTE ELAPSED AFTER THE VEHICLE HAS BEEN STARTED. THE ORIGINAL FAILURE MILEAGE WAS 3829, AND THE CURRENT MILEAGE WAS 23700.*AK THE BRAKES WERE INOPERATIVE, THE BELTS SQUEAKED, THERE WAS A PROBLEM WITH THE ABS, THE AIR BAG LIGHT ILLUMINATED, THE CRUISE CONTROL DIDN'T WORK PROPERLY, THE REAR WIPER WOULD ONLY WIPE THE MIDDLE OF THE BACK WINDSHIELD. A NEW FUEL NECK WAS INSTALLED. UPDATED 03/15/07. *JB
NHTSA ODI #10182695
11,000 miles · Dec 14, 2006
Engine And Engine Cooling
DT*: THE CONTACT STATED WHILE DRIVING 35 MPH UNDER NORMAL ROAD CONDITIONS, THE VEHICLE STALLED. THERE WERE NO WARNINGS PRIOR TO THE INCIDENT. THE VEHICLE WAS TAKEN TO THE SERVICE DEALER, WHO WAS NOT ABLE TO FIND THE PROBLEM.
NHTSA ODI #10176130
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.