NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
488 reports26,000 miles · Feb 2, 2009
Exterior LightingInterior Lighting
TL*THE CONTACT OWNS A 2005 GMC ENVOY. WHILE DRIVING AT AN UNKNOWN SPEED, THE INTERIOR AND EXTERIOR HEAD LAMPS FAILED SIMULTANEOUSLY WITHOUT WARNING. AS A CONSEQUENCE, VISIBILITY IS SIGNIFICANTLY REDUCED, WHICH INCREASES THE RISK OF A CRASH. THE VEHICLE WAS TAKEN TO THE DEALER NUMEROUS TIMES, BUT THEY CANNOT DETERMINE THE CAUS…
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TL*THE CONTACT OWNS A 2005 GMC ENVOY. WHILE DRIVING AT AN UNKNOWN SPEED, THE INTERIOR AND EXTERIOR HEAD LAMPS FAILED SIMULTANEOUSLY WITHOUT WARNING. AS A CONSEQUENCE, VISIBILITY IS SIGNIFICANTLY REDUCED, WHICH INCREASES THE RISK OF A CRASH. THE VEHICLE WAS TAKEN TO THE DEALER NUMEROUS TIMES, BUT THEY CANNOT DETERMINE THE CAUSE OF THE FAILURE. HE IS IN THE PROCESS OF NOTIFYING THE MANUFACTURER. THE FAILURE MILEAGE WAS 26,000 AND CURRENT MILEAGE WAS 46,000.
NHTSA ODI #10257135
25,000 miles · Jan 31, 2009
Electrical System
THE HEADLIGHTS & DASH LIGHTS FLICKER & GO OUT WHILE DRIVING AT NIGHT TIME , NO WEATHER BEING A FACTOR & NO OTHER THINGS EITHER. OTHER PEOPLE EXP. THE SAME PROB !!!! THE VOLTAGE METER IS DROPPING DURING THIS PERIOD ALSO .HAVE HAD BACK TO DEALER THEY TIGHTENED THE BATTERY CABLES & ALSO PUT PADS BEHIND THE CABLES THIS WAS NOT A FIX…
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THE HEADLIGHTS & DASH LIGHTS FLICKER & GO OUT WHILE DRIVING AT NIGHT TIME , NO WEATHER BEING A FACTOR & NO OTHER THINGS EITHER. OTHER PEOPLE EXP. THE SAME PROB !!!! THE VOLTAGE METER IS DROPPING DURING THIS PERIOD ALSO .HAVE HAD BACK TO DEALER THEY TIGHTENED THE BATTERY CABLES & ALSO PUT PADS BEHIND THE CABLES THIS WAS NOT A FIX !!!!!!! WHAT CAN BE DONE TO FIX THIS MAJOR PROBLEM SAFETY!!!!! THIS HAPPENS ALMOST EVERY TIME YOU DRIVE AND THE LIGHTS ARE ON!!!!!! *TR
NHTSA ODI #10257065
49,000 miles · Dec 1, 2008
Power Train
TL*THE CONTACT OWNS A 2005 GMC ENVOY. WHILE DRIVING 75 MPH IN THE RAIN WITH THE CRUISE CONTROL ACTIVATED, THE VEHICLE BEGAN TO DECELERATE ON ITS OWN. IN ADDITION, THE ENGINE BEGAN TO REV. THE VEHICLE WAS PULLED OVER TO THE SIDE OF THE ROAD AND TURNED OFF. WHEN THE CONTACT RESTARTED THE VEHICLE AND SHIFTED INTO DRIVE, IT WOUL…
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TL*THE CONTACT OWNS A 2005 GMC ENVOY. WHILE DRIVING 75 MPH IN THE RAIN WITH THE CRUISE CONTROL ACTIVATED, THE VEHICLE BEGAN TO DECELERATE ON ITS OWN. IN ADDITION, THE ENGINE BEGAN TO REV. THE VEHICLE WAS PULLED OVER TO THE SIDE OF THE ROAD AND TURNED OFF. WHEN THE CONTACT RESTARTED THE VEHICLE AND SHIFTED INTO DRIVE, IT WOULD NOT SHIFT INTO THIRD OR FOURTH GEAR. THE VEHICLE WAS TOWED TO THE DEALER AND THEY STATED THAT THE TRANSMISSION WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE VEHICLE HAS NOT BEEN REPAIRED. THE MANUFACTURER STATED THAT THEY WOULD CALL THE DEALER TO FIND OUT THE DIAGNOSIS OF THE FAILURE AND THEN CALL THE CONTACT. THE CURRENT AND FAILURE MILEAGES WERE 49,000. UPDATED 01/08/09 *BF UPDATED 01/09/09 *JB
NHTSA ODI #10250234
96,160 miles · Nov 26, 2008
Electrical System
THE GMC ENVOY'S SPEEDOMETER STOPPED WORKING AND GMC IS AWARE OF THIS ISSUE AND ONLY SOLUTION THEY HAVE IS 450 + LABOR WHICH DOESN'T GUARANTEE THE ISSUE IS RESOLVED...I HAVE RESEARCHED NUMEROUS ARTICLES AS WELL AS WEBSITES WHERE OTHER GM VICTIMS HAVE REPORTED THEIR VEHICLES TO DO THE SAME THING....THE SPEEDOMETER IS SOMETHING VER…
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THE GMC ENVOY'S SPEEDOMETER STOPPED WORKING AND GMC IS AWARE OF THIS ISSUE AND ONLY SOLUTION THEY HAVE IS 450 + LABOR WHICH DOESN'T GUARANTEE THE ISSUE IS RESOLVED...I HAVE RESEARCHED NUMEROUS ARTICLES AS WELL AS WEBSITES WHERE OTHER GM VICTIMS HAVE REPORTED THEIR VEHICLES TO DO THE SAME THING....THE SPEEDOMETER IS SOMETHING VERY IMPORTANT WHICH SHOULDN'T BE A COMMON PROBLEM, SERIOUS IF NOT LIFE TAKING ACCIDENTS HAPPEN WHEN DRIVERS AREN'T ABLE TO BE AWARE OF THEIR SPEED. I WOULD HOPE THAT THIS COMPLAINT WILL FOLLOW WITH OTHERS AND THERE WILL BE SOME TYPE RECALL THAT TAKES PLACE. *TR
NHTSA ODI #10249949
37,000 miles · Nov 25, 2008
Air BagsVehicle Speed ControlCrashInjury
2005 GMC ENVOY DENALI W/37,800 MILES. ON SEVERAL OCCASIONS, WHILE COMPLETELY STOPPED, THE VEHICLE WOULD SLIGHTLY LUNGE FORWARD AS IF GOING TO ACCELERATE ALTHOUGH THE BRAKE WAS ENGAGED. WHEN LOCAL GMC SERVICE DEPT. WAS CALLED BY OWNER TO INQUIRE ABOUT PROBLEM, SERVICE TECH SAID HE HAD NO REPORTS OF SUCH SITUATION. THE SURGE HAPPE…
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2005 GMC ENVOY DENALI W/37,800 MILES. ON SEVERAL OCCASIONS, WHILE COMPLETELY STOPPED, THE VEHICLE WOULD SLIGHTLY LUNGE FORWARD AS IF GOING TO ACCELERATE ALTHOUGH THE BRAKE WAS ENGAGED. WHEN LOCAL GMC SERVICE DEPT. WAS CALLED BY OWNER TO INQUIRE ABOUT PROBLEM, SERVICE TECH SAID HE HAD NO REPORTS OF SUCH SITUATION. THE SURGE HAPPENED AGAIN ON 10/31/08 AND THERE WAS A PASSENGER IN THE VEHICLE WHO ALSO EXPERIENCED THE SENSATION. ON 11/17/08 WHILE AT A COMPLETE STOP, AFTER TURNING WHEELS SHARPLY TO THE RIGHT TO GO AROUND A ROAD EQUIPMENT VEHICLE IN THE PARKING LOT, UPON REMOVING FOOT FROM BRAKE, THE DENALI LUNGED FORWARD ENOUGH TO BUMP THE TIRE OF THE EQUIPMENT VEHICLE AND THEN IT ACCELERATED AS IF THE CRUISE CONTROL WAS ACTIVATED. THERE WERE NO BRAKES WHEN AN EFFORT WAS MADE TO STOP THE VEHICLE. STEERING OF VEHICLE WAS HARD DUE TO POWER STEERING FAILURE . VEHICLE JUMPED UPON A CURB, DRIVER FORCEFULLY TURNED STEERING WHEEL TO AVOID HITTING A BRICK BUILDING AS ACCELERATION WAS STILL ONGOING. VEHICLE CRASHED THROUGH A STEEL GARAGE DOOR AND CONTINUED UNTIL IT CRASHED INTO A RETAINING COLUMN AT WHICH TIME THE MOTOR WAS TURNED OFF. THE IMPACT OF THE COLLISION COULD BE FELT UP TO THE SECOND FLOOR OF THE BUILDING. THE DRIVER WAS WEARING A SEAT BELT. THE ONSTAR SERVICES DID NOT INITIATE RESPONSE TO DRIVER DESPITE THE FACT THAT THE FRONT BUMPER OF THE VEHICLE WAS NO LONGER ATTACHED TO THE VEHICLE, NOR DID THE DRIVER AIRBAG DEPLOY UPON IMPACT. VEHICLE WAS TOWED AWAY FROM THE SCENE. DRIVER WAS TRANSPORTED TO HOSPITAL BY EMS FOR INJURY EVALUATION. SEVERAL WITNESSES DESCRIBED INCIDENT AS "VEHICLE OUT OF CONTROL". *TR UPDATED 10/29/10
NHTSA ODI #10249825
71,203 miles · Nov 17, 2008
Fuel System, Gasoline
ONE DAY WHEN I FILLED MY GAS TANK UP THE GAS GAUGE STILL SHOWED THAT MY TANK WAS EMPTY. IT SINCE THEN HAS NOT WORKED CORRECTLY IT GOES FROM EMPTY TO HALF FULL AND SO FORTH, WHEN NO FUEL HAS EVEN BEEN ADDED. DEFINITELY CAN'T TRUST IT OR YOU WILL BE WALKING HOME. I FEEL THAT THE MANUFACTURER SHOULD CORRECT THIS PROBLEM. I HAVE REA…
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ONE DAY WHEN I FILLED MY GAS TANK UP THE GAS GAUGE STILL SHOWED THAT MY TANK WAS EMPTY. IT SINCE THEN HAS NOT WORKED CORRECTLY IT GOES FROM EMPTY TO HALF FULL AND SO FORTH, WHEN NO FUEL HAS EVEN BEEN ADDED. DEFINITELY CAN'T TRUST IT OR YOU WILL BE WALKING HOME. I FEEL THAT THE MANUFACTURER SHOULD CORRECT THIS PROBLEM. I HAVE READ MANY COMPLAINTS STATING THIS EXACT SAME PROBLEM. *TR
NHTSA ODI #10249062
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
52,250 miles · Oct 14, 2008
Fuel System, Gasoline
I STARTED THE VEHICLE ONE DAY AND THE FUEL GAUGE FAILED TO WORK. IT IS A CONTINUOUS FAIL. NOTHING HAS BEEN DONE TO REPAIR IT. COST OF PART IS APPROXIMATELY $280 AT LOCAL NAPA STORE. *TR
NHTSA ODI #10245397
45,000 miles · Oct 8, 2008
Fuel System, Gasoline
FUEL GAGE NO LONGER WORKS ON MY 2005 GMC ENVOY. WHICH FROM READING BLOGS MEANS I NEED A NEW SENDING UNIT, FLOAT, AND FUEL PUMP. HAVE FOUND MANY BLOGS ON-LINE ABOUT THIS VERY PROBLEM WITH ENVOYS AND TRAILBLAZERS. *TR
NHTSA ODI #10244760
72,200 miles · Aug 25, 2008
StructureVisibility
I HAVE A 2005 ENVOY THAT I PURCHASED LESS THAN A YEAR AGO FROM A LOCAL CHEVROLET DEALERSHIP. ON THE DAY OF THE FAILURE, I DID NOT DRIVE THE VEHICLE TO WORK. WHEN I RETURNED HOME, I FOUND THAT THE BACK TRUNK HATCH HAD SOMEHOW OPENED ON ITS OWN, CAUSING IT TO SEPARATE FROM THE GLASS. THE TRUNK HATCH WAS BROKEN IN SUCH A MANNER …
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I HAVE A 2005 ENVOY THAT I PURCHASED LESS THAN A YEAR AGO FROM A LOCAL CHEVROLET DEALERSHIP. ON THE DAY OF THE FAILURE, I DID NOT DRIVE THE VEHICLE TO WORK. WHEN I RETURNED HOME, I FOUND THAT THE BACK TRUNK HATCH HAD SOMEHOW OPENED ON ITS OWN, CAUSING IT TO SEPARATE FROM THE GLASS. THE TRUNK HATCH WAS BROKEN IN SUCH A MANNER THAT IT COULD NOT HAVE BEEN BROUGHT ON BY ANOTHER INDIVIDUAL OR OBJECT. AFTER NOTICING THIS DEFECT, I CONTACTED THE DEALERSHIP. THE AUTOMOBILE WAS TAKEN TO THE DEALERSHIP THE NEXT DAY WHERE THEY FILED A CLAIM WITH THE WARRANTY COMPANY. HOWEVER, THE SERVICE TECHNICIAN DECIDED THAT THE STRUTS WERE NOT THE CAUSE OF THE DEFECT AND WORKED PROPERLY AND COULD NOT HYPOTHESIS ON WHY THIS FAILURE HAD OCCURRED. HE REPORTED THIS TO THE WARRANTY COMPANY WHO THUS DENIED THE CLAIM BECAUSE THEY DO NOT COVER THE GLASS ON THE AUTOMOBILE. I WAS DISPLEASED WITH THE OUTCOME AND CONTACTED BOTH THE WARRANTY COMPANY AND THE GMC HEADQUARTERS MYSELF, HOPING THAT THIS INITIATIVE WOULD RESOLVE THE SITUATION. IT IS MY BELIEF THAT THERE IS SOME TYPE OF DEFECT THAT CAUSED THE HATCH TO OPEN ON ITS OWN. THE COMPANY WILL ONLY REPLACE THE STRUTS AND ARE REQUIRING ME TO PAY FOR THE GLASS REPLACEMENT AND LABOR FOR SOMETHING THAT I NEITHER CAUSED NOR COULD HAVE PREVENTED. *TR
NHTSA ODI #10239706
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.