NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
84 reports34,961 miles · Feb 19, 2015
Electrical SystemPower Train
ENGINE SUDDENLY STOPPED RUNNING, PLACED SHIFT LEVER TO PARK POSITION. ENGINE WOULD NOT RESTART. TRANSMISSION WAS NOW LOCKED IN PARK, CAUSING INABILITY TO PUSH VEHICLE TO SAFETY. REPAIR BY GMC DEALER INVOLVED REPAIRING ELECTRICAL SHORT IN FACTORY WIRING UNDER DASHBOARD AT THE FIREWALL, IN THE AREA OF THE BRAKE BOOSTER MOUNT. A…
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ENGINE SUDDENLY STOPPED RUNNING, PLACED SHIFT LEVER TO PARK POSITION. ENGINE WOULD NOT RESTART. TRANSMISSION WAS NOW LOCKED IN PARK, CAUSING INABILITY TO PUSH VEHICLE TO SAFETY. REPAIR BY GMC DEALER INVOLVED REPAIRING ELECTRICAL SHORT IN FACTORY WIRING UNDER DASHBOARD AT THE FIREWALL, IN THE AREA OF THE BRAKE BOOSTER MOUNT. APPARENT CAUSE IS IMPROPER ROUTING OF WIRING AT TIME OF VEHICLE MFR, CAUSING ABRASION OF WIRING OVER TIME. *TR
NHTSA ODI #10689503
Mileage unknown · Dec 13, 2014
Suspension
THE REAR END BEGAN DEFLATING AFTER SITTING OVERNIGHT. AT FIRST IT WOULD AIR BACK UP WHEN STARTED IMMEDIATELY. THEN IT BEGAN TO TAKE A LONG TIME TO AIR BACK UP. IT RECENTLY BEGAN DEFLATING ALL OF THE TIME, EVEN WHEN DRIVING. NOW IT WILL NOT AIR UP AT ALL. THE MOTOR RUNS BUT NOTHING HAPPENS. THE VEHICLE HAS BEEN SERVICED BY …
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THE REAR END BEGAN DEFLATING AFTER SITTING OVERNIGHT. AT FIRST IT WOULD AIR BACK UP WHEN STARTED IMMEDIATELY. THEN IT BEGAN TO TAKE A LONG TIME TO AIR BACK UP. IT RECENTLY BEGAN DEFLATING ALL OF THE TIME, EVEN WHEN DRIVING. NOW IT WILL NOT AIR UP AT ALL. THE MOTOR RUNS BUT NOTHING HAPPENS. THE VEHICLE HAS BEEN SERVICED BY THE DEALERSHIP TO NO AVAIL. EACH TIME, THERE IS SOME NEW REPLACEMENT PART THAT MUST BE PURCHASED. THIS IS A SAFETY HAZARD AND THE MANUFACTURER SHOULD RECALL THIS VEHICLE. *TR
NHTSA ODI #10664065
98,000 miles · Dec 12, 2014
Visibility
TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI. WHILE DRIVING APPROXIMATELY 10 MPH, BOTH REARVIEW MIRRORS STARTED TO MOVE INDEPENDENTLY. THE FAILURE RECURRED MULTIPLE TIMES. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 98,000.
NHTSA ODI #10663989
72,000 miles · Nov 24, 2014
Latches/locks/linkages
TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI. THE CONTACT STATED THAT WHILE PARKED, THE DOORS LOCKED INDEPENDENTLY AND WINDOWS FAILED TO OPEN. THE FAILURE RECURRED ON TWO OCCASIONS. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CONTACT RECEIVED AN UNKNOWN MANUFACTUR…
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TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI. THE CONTACT STATED THAT WHILE PARKED, THE DOORS LOCKED INDEPENDENTLY AND WINDOWS FAILED TO OPEN. THE FAILURE RECURRED ON TWO OCCASIONS. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CONTACT RECEIVED AN UNKNOWN MANUFACTURER RECALL NOTIFICATION. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 72,000.
NHTSA ODI #10660507
171,710 miles · Nov 4, 2014
Exterior Lighting
WHILE DRIVING AT NIGHT, MY HEADLIGHTS AND INSTRUMENT PANEL WENT OUT FOR NO APPARENT REASON. THE HIGH BEAMS DID NOT WORK EITHER. THE ONLY WAY I COULD GET LIGHTS ON WAS TO HOLD THE FLASH-TO-PASS LIGHTS ON. I STOPPED IN A PARKING LOT, TURNED OFF THE CAR AND THEN STARTED IT AGAIN AND THE LIGHTS CAME BACK ON BUT WENT OUT AGAIN AFTER…
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WHILE DRIVING AT NIGHT, MY HEADLIGHTS AND INSTRUMENT PANEL WENT OUT FOR NO APPARENT REASON. THE HIGH BEAMS DID NOT WORK EITHER. THE ONLY WAY I COULD GET LIGHTS ON WAS TO HOLD THE FLASH-TO-PASS LIGHTS ON. I STOPPED IN A PARKING LOT, TURNED OFF THE CAR AND THEN STARTED IT AGAIN AND THE LIGHTS CAME BACK ON BUT WENT OUT AGAIN AFTER I STARTED DRIVING. I STOPPED AGAIN AND THE LIGHTS WORKED FINE FOR A COUPLE OF WEEKS BUT I EXPERIENCED THE SAME PROBLEM ON 11/3/2014. *TR
NHTSA ODI #10652308
94,000 miles · Oct 31, 2014
Exterior Lighting
WHILE DRIVING AT DUSK, AND NIGHT, MY HEADLIGHTS JUST GO OFF FOR NO APPARENT REASON. THE LIGHTS SOMETIMES WILL NOT WORK FOR MANY DAYS IN A ROW, MAKING IT NOT SAFE TO DRIVE AT NIGHT. THEN THEY START WORKING AGAIN. THIS HAS CAUSED SAFETY CONCERNS AND DIFFICULTY IN HAVING SAFE NIGHT TRANSPORTATION. THIS PROBLEM USUALLY STARTS AFTER …
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WHILE DRIVING AT DUSK, AND NIGHT, MY HEADLIGHTS JUST GO OFF FOR NO APPARENT REASON. THE LIGHTS SOMETIMES WILL NOT WORK FOR MANY DAYS IN A ROW, MAKING IT NOT SAFE TO DRIVE AT NIGHT. THEN THEY START WORKING AGAIN. THIS HAS CAUSED SAFETY CONCERNS AND DIFFICULTY IN HAVING SAFE NIGHT TRANSPORTATION. THIS PROBLEM USUALLY STARTS AFTER RAIN OR SNOW. *TR
NHTSA ODI #10651562
62,070 miles · Oct 24, 2014
Electrical SystemEngine
ENGINE STALLED A FEW SECONDS AFTER STARTING, THEN WOULD NOT CRANK, ONLY CLICKED. I HAD THE CAR TOWED IN FOR SERVICE. TECHNICIAN CHECKED BATTERY. IT WAS FULLY CHARGED AND VEHICLE HAD FULL VOLTAGE. DIAGNOSTICS DETERMINED LOW VOLTAGE OUT FROM THE IGNITION SWITCH. RECOMMENDED IGNITION SWITCH SHOULD BE REPLACED. I HAD THE IGNITION SW…
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ENGINE STALLED A FEW SECONDS AFTER STARTING, THEN WOULD NOT CRANK, ONLY CLICKED. I HAD THE CAR TOWED IN FOR SERVICE. TECHNICIAN CHECKED BATTERY. IT WAS FULLY CHARGED AND VEHICLE HAD FULL VOLTAGE. DIAGNOSTICS DETERMINED LOW VOLTAGE OUT FROM THE IGNITION SWITCH. RECOMMENDED IGNITION SWITCH SHOULD BE REPLACED. I HAD THE IGNITION SWITCH REPLACED TWICE ALREADY. I HAVE HAD TO REPLACE THREE IGNITION SWITCHES IN THREE YEARS AT A TOTAL COST OF $817. I UNDERSTAND THAT GM HAS RECALLED IGNITION SWITCHES ON SEVERAL MODELS BUT THE ENVOY IS NOT PART OF THAT RECALL. OBVIOUSLY MY VEHICLE HAS THE SAME PROBLEM AS THE RECALLED VEHICLES, WHY IS IT NOT PART OF THE RECALL? THE FIRST IGNITION SWITCH FAILED AT 65-70 MPH ON THE FREEWAY. THIS IS A VERY DANGEROUS PROBLEM. SINCE THE REST OF THE ELECTRONICS ARE CONNECTED TO THE IGNITION I HAVE NO SAFETY EQUIPMENT SUCH AS AIR BAGS. IF I WOULD HAVE BEEN IN AN ACCIDENT, IT COULD HAVE BEEN FATAL. *TR
NHTSA ODI #10649561
51,505 miles · Oct 24, 2014
Electrical SystemEngine
ENGINE WOULDN'T CRANK AT TIMES. STARTS NORMALLY WHEN IT DOES. AFTER ABOUT A WEEK OF HAVING THIS PROBLEM I TOOK A THE CAR IN FOR SERVICE. DIAGNOSTICS DETERMINED THE IGNITION SWITCH WAS BAD AND SHOULD BE REPLACED. I HAD THE IGNITION SWITCH REPLACED 14 MONTHS AND 6070 MILES PRIOR TO THIS INCIDENT. THEY REPLACED THE IGNITION SWITCH.…
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ENGINE WOULDN'T CRANK AT TIMES. STARTS NORMALLY WHEN IT DOES. AFTER ABOUT A WEEK OF HAVING THIS PROBLEM I TOOK A THE CAR IN FOR SERVICE. DIAGNOSTICS DETERMINED THE IGNITION SWITCH WAS BAD AND SHOULD BE REPLACED. I HAD THE IGNITION SWITCH REPLACED 14 MONTHS AND 6070 MILES PRIOR TO THIS INCIDENT. THEY REPLACED THE IGNITION SWITCH. THE PART WAS UNDER WARRANTY BUT DIAGNOSTICS AND LABOR WAS $220. THE FIRST IGNITION SWITCH FAILED AT 65-70 MPH ON THE FREEWAY. I UNDERSTAND THAT GM HAS RECALLED IGNITION SWITCHES ON SEVERAL MODELS BUT THE ENVOY IS NOT PART OF THAT RECALL. OBVIOUSLY MY VEHICLE HAS THE SAME PROBLEM AS THE RECALLED VEHICLES, WHY IS IT NOT PART OF THE RECALL? THIS IS A VERY DANGEROUS PROBLEM. SINCE THE REST OF THE ELECTRONICS ARE CONNECTED TO THE IGNITION I HAVE NO SAFETY EQUIPMENT SUCH AS AIR BAGS. IF I WOULD HAVE BEEN IN AN ACCIDENT, IT COULD HAVE BEEN FATAL. *TR
NHTSA ODI #10649554
45,435 miles · Oct 24, 2014
Electrical SystemEngine
I WAS DRIVING ON THE FREEWAY AT 65-70 MPH. THE ENGINE LUGGED A LITTLE LIKE IT WAS RUNNING OUT OF GAS BUT THE TANK WAS HALF FULL. THE ENGINE RESUMED RUNNING AT FULL SPEED. A FEW SECONDS LATER THE ENGINE SHUT OFF. I WAS ABLE TO COAST LONG ENOUGH TO PULL OFF THE FREEWAY. BUT WITHOUT POWER STEERING AND BRAKES THIS WAS NOT AN EASY TA…
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I WAS DRIVING ON THE FREEWAY AT 65-70 MPH. THE ENGINE LUGGED A LITTLE LIKE IT WAS RUNNING OUT OF GAS BUT THE TANK WAS HALF FULL. THE ENGINE RESUMED RUNNING AT FULL SPEED. A FEW SECONDS LATER THE ENGINE SHUT OFF. I WAS ABLE TO COAST LONG ENOUGH TO PULL OFF THE FREEWAY. BUT WITHOUT POWER STEERING AND BRAKES THIS WAS NOT AN EASY TASK. ONCE THE CAR STOPPED I TURNED OFF THE IGNITION AND PUT THE CAR IN PARK. I TRIED TO RESTART THE CAR BUT NOTHING HAPPENED. I CALLED A TOW TRUCK BUT THE DRIVER COULD NOT GET THE CAR TO SHIFT INTO NEUTRAL IN ORDER TO PUT IT ON THE CAR CARRIER BECAUSE THE SHIFTER IS TIED TO THE ELECTRONICS. WITHOUT POWER IT DOES NOT WORK. HE HAD TO CALL FOR ANOTHER TOW TRUCK TO PULL THE VEHICLE IN FOR SERVICE. THE SERVICE TECHNICIAN TESTED AND FOUND LOW VOLTAGE FROM THE IGNITION SWITCH. HE REPLACED THE IGNITION SWITCH. DIAGNOSTICS, PART AND LABOR $307. THIS IS A VERY DANGEROUS PROBLEM. IF I WAS NOT ABLE TO MOVE OUT OF TRAFFIC I WOULD HAVE BEEN A SITTING DUCK IN THE MIDDLE IF THE FREEWAY. SINCE THE REST OF THE ELECTRONICS ARE CONNECTED TO THE IGNITION I HAD NO SAFETY EQUIPMENT SUCH AS AIR BAGS. IF I WOULD HAVE BEEN IN AN ACCIDENT AT FREEWAY SPEEDS, IT COULD HAVE BEEN FATAL. *TR
NHTSA ODI #10649549
116,000 miles · Oct 3, 2014
Electrical System
DRIVING AT 20 MILES AN HOUR AND HEAR A CRACKLING NOISE IN DRIVER DOOR PANEL. WINDOW ROLLED UP ON IT'S OWN, SIDE MIRRORS BEGAN TO READJUST THEMSELVES AND HEATED SEAT CAME ON. WHEN NOISE QUIT I HAD LOST ALL CONTROL OF PANEL CONTROLS. CALLED GM DEALER TO GET IT IN FOR THE RECALL ON MASTER SWITCH AND WAS TOLD THERE WERE NO PARTS …
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DRIVING AT 20 MILES AN HOUR AND HEAR A CRACKLING NOISE IN DRIVER DOOR PANEL. WINDOW ROLLED UP ON IT'S OWN, SIDE MIRRORS BEGAN TO READJUST THEMSELVES AND HEATED SEAT CAME ON. WHEN NOISE QUIT I HAD LOST ALL CONTROL OF PANEL CONTROLS. CALLED GM DEALER TO GET IT IN FOR THE RECALL ON MASTER SWITCH AND WAS TOLD THERE WERE NO PARTS OR REMEDY FROM GM AS OF YET. RECALL CAME OUT A COUPLE MONTHS AGO. CALLED ANOTHER DEALER AND TOLD THE SAME THING. I CALLED DIRECT TO GM AND WAS TOLD THERE WAS NO SOLUTION AT THIS TIME. I HAD NO WINDOW CONTROL, CAR WILL NOT LOCK, SIDE MIRRORS POINTED DOWN TO GROUND SO I CAN'T USE THEM. I CALLED BACK AND ASKED WHY A RECALL WAS ISSUED WHEN THERE WERE NO REPLACEMENT PARTS ON A SAFETY ISSUE SUCH AS THIS. KIDS CAN OPEN DOORS, CAN'T CHANGE LANES ON HIGHWAY DO TO MIRRORS AND CAN'T USE WINDOWS. AS I CONTINUED TO DRIVE THE CRACKLING CAME BACK AND SEAT REHEATED, MIRRORS REPOSITIONED, AND WINDOW TRIES TO GO DOWN. I CALLED AGAIN AND WAS TOLD I COULD SET AN APPOINTMENT AND WOULD HAVE TO PAY UP FRONT AND THEN GET REIMBURSED FROM GM. I TOLD THEM I WOULD NOT UNDER ANY CIRCUMSTANCES. THEY WOULD REVIEW AND GET BACK WITH ME IN 24-48 HOURS. NOTHING SO FAR.THIS MORNING WHILE DRIVING IN THE DARK THE NOISE STARTED AGAIN AND I LOST MY HEADLIGHTS, BLACK, NOTHING. SITTING AT A STOP SIGN TODAY, CAR RUNNING AND IN DRIVE, I LOST ALL DASH PANEL GAUGES FOR ABOUT 30 SECONDS. CAR STILL RAN AND EVERYTHING CAME BACK. FEARFUL OF A WRECK AND HAVING KIDS IN THE CAR WITH NO SAFETY LOCKS. I CAN'T MANUALLY LOCK HATCH SO I AM AT RISK OF AN EASY BREAK IN AND I AM IN THE MEDICAL FIELD AND TRAVEL WITH SUPPLIES THAT MUST BE LOCKED UP. NEVER BY ANOTHER GMC SOMETHING NEEDS TO BE DONE!!!! *TR
NHTSA ODI #10641327
NHTSA investigations
1DP10001 · 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.