IllustrationWHILE DRIVING, CHECK ENGINE LIGHT CAME ON. FUEL TANK GAUGE STARTED TO CONTINUALLY SHIFT FROM WHATEVER STATE THE FUEL TANK WAS IN TO EMPTY THEN AFTER SOME TIME REVERT BACK TO NORMAL FUEL CAPACITY AT THE TIME. CONTACTED ONSTAR FOR A DIAGNOSTIC AND THEY STATED THERE IS A PROBLEM WITH THE FUEL SENDING UNIT. *JB
2006 GMC Envoy Denali Xl
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Other model years Selected year
Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
30–25K
625–50K
1150–75K
575–100K
6100–150K
6150K+
37 reports with mileage · 5 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Fuel System, Gasoline. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports1 fire reports0 injury reports
What owners actually said
42 reportsI WAS DRIVING ALONG INTERSTATE 69 NEAR FORT WAYNE IN MY LEASED 2006 GMC ENVOY DENALI WITH MY BOSS ON COMPANY BUSINESS WHEN A CAR FROM BEHIND ME PULLED ALONG SIDE HONKING THEIR HORN AND YELLING FOR ME TO PULL OVER AND GET OUT OF MY CAR BECAUSE IT WAS ON FIRE. WE IMMEDIATELY STOPPED, GOT OUT, AND SAW FLAMES UNDERNEATH THE ENGIN…
Read full complaint
I WAS DRIVING ALONG INTERSTATE 69 NEAR FORT WAYNE IN MY LEASED 2006 GMC ENVOY DENALI WITH MY BOSS ON COMPANY BUSINESS WHEN A CAR FROM BEHIND ME PULLED ALONG SIDE HONKING THEIR HORN AND YELLING FOR ME TO PULL OVER AND GET OUT OF MY CAR BECAUSE IT WAS ON FIRE. WE IMMEDIATELY STOPPED, GOT OUT, AND SAW FLAMES UNDERNEATH THE ENGINE COMPARTMENT OF MY VEHICLE. WE CALLED 911 WHO DISPATCHED FORT WAYNE FIRE AND INDIANA STATE POLICE PERSONNEL. THE CAR WAS TOWED TO THE LOCAL GMC DEALERSHIP. BOTH A THIRD PARTY INSURANCE INVESTIGATOR AND A GENERAL MOTORS INVESTIGATOR CONCUR THAT THE FRONT DIFFERENTIAL FAILED CAUSING LUBRICANT TO SPRAY ONTO THE CATALYTIC CONVERTER AND EXHAUST SYSTEM IGNITING A FIRE. GENERAL MOTORS HAS ADMITTED TO ME THAT THIS IS A DEFECT I COULD NOT POSSIBLY KNOWN ABOUT NOR WAS IT MY FAULT IN ANY WAY. GENERAL MOTORS WANTS TO "REPAIR" THE VEHICLE AND PUT ME BACK IN IT. I'VE TOLD THEM MY LIFE AND MY BOSS'S LIFE WERE AT STAKE BECAUSE OF THIS FIRE WHICH IF NO ONE HAD WARNED ME ABOUT AS I WAS DRIVING, THE CONSEQUENCE COULD HAVE BEEN TWO FATALITIES AS I DID NOT KNOW THE VEHICLE WAS ON FIRE AS I DROVE ALONG THE HIGHWAY. I'VE ASKED GENERAL MOTORS TO DO THE RIGHT THING, BREAK MY LEASE, AND THEY CAN HAVE THIS ENVOY TO DO WITH AS THEY PLEASE. TO DATE, THEY HAVE REFUSED TO ACCOMMODATE ME. I REFUSE TO PUT MYSELF OR MY TWO SMALL CHILDREN BACK INTO A VEHICLE THAT WAS ON FIRE AND COULD HAVE COST ME MY LIFE! *JB
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
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.