Illustration2006 GMC ENVOY DENALI. CONSUMER WRITES IN REGARDS TO DROPPED VALVE. *LD *JS
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
Engine complaints
5 reportsTAKATA RECALL I HAVE HAD TO MAKE MANY REPAIRS ON THIS VEHICLE. HOWEVER, NOW THE LIFTERS IN THE ENGINE COLLAPSED. THE VEHICLE ONLY HAS ABOUT 87,000 MILES ON IT. THIS IS UNACCEPTABLE. THERE HAVE BEEN MANY COMPLAINTS ABOUT THIS VEHICLE AND THE LIFTERS COLLAPSING. WE ARE A ONE INCOME FAMILY AND THE REPAIRS TO THIS VEHICLE ARE ASTR…
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TAKATA RECALL I HAVE HAD TO MAKE MANY REPAIRS ON THIS VEHICLE. HOWEVER, NOW THE LIFTERS IN THE ENGINE COLLAPSED. THE VEHICLE ONLY HAS ABOUT 87,000 MILES ON IT. THIS IS UNACCEPTABLE. THERE HAVE BEEN MANY COMPLAINTS ABOUT THIS VEHICLE AND THE LIFTERS COLLAPSING. WE ARE A ONE INCOME FAMILY AND THE REPAIRS TO THIS VEHICLE ARE ASTRONOMICAL. WELL OVER 3500.00 DOLLARS. THIS VEHICLE IS NOT DRIVABLE AND HAS BEEN SITTING FOR A YEAR NOW AT MY MECHANICS. THE VEHICLE IS OF NO USE TO ME AND HAS BECOME A HUGE PAPER WEIGHT NOW. THE WORST PART IS I STILL OWE ON THE VEHICLE TOO. GM NEEDS TO TAKE RESPONSIBILITY AND DO A RECALL ON THIS VEHICLE FOR THE AFM LIFTERS, OR PAY FOR THE REPAIRS TO THIS VEHICLE. I WILL NEVER BUY ANOTHER GM PRODUCT AGAIN. OWN UP TO YOUR MISTAKES AND TAKE ACCOUNTABILITY FOR THIS PROBLEM. I AM NOT THE ONLY ONE THIS HAS HAPPENED TO. VERY DISAPPOINTED IN THIS VEHICLE THAT IS SUPPOSE TO BE AMERICAN MADE!!!!!!! THEN YOU WANT TO KNOW WHY PEOPLE ARE BUYING MORE FOREIGN MADE CARS. THEY SEEM TO BE MORE RELIABLE THAN THE GM PRODUCTS.
MISFIRE P0301 A LOT OF 5.3 ENGINES IN 2006 GMC DENALI CAN FINE PROBLEM NOT WIRES CHECKED COILS CHECKED FUEL CHECKED COMPRESSION OK IT HAS COST ME MORE THAN 1100.00 DOLLARS STILL MISFIRE. *TR
TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI XL. THE CONTACT STATED THAT THE VEHICLE FAILED TO ACCELERATE OVER 40 MPH. THE CONTACT ALSO STATED THAT THE ENGINE AND THE LOW FUEL WARNING LIGHTS ILLUMINATED ALTHOUGH THE FUEL LEVEL WAS AT MAX. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS INFORMED THAT THE THROTTLE BODY A…
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TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI XL. THE CONTACT STATED THAT THE VEHICLE FAILED TO ACCELERATE OVER 40 MPH. THE CONTACT ALSO STATED THAT THE ENGINE AND THE LOW FUEL WARNING LIGHTS ILLUMINATED ALTHOUGH THE FUEL LEVEL WAS AT MAX. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE CONTACT WAS INFORMED THAT THE THROTTLE BODY AND FUEL PUMP NEEDED TO BE REPLACED. THE FAILURE MILEAGE WAS 128,623 AND THE CURRENT MILEAGE WAS 138,182...UPDATED 04-03-13 *BF UPDATED 04/22/2013 *JS
VEHICLE GOES INTO REDUCED ENGINE POWER MODE UNEXPECTEDLY WHILE DRIVING WITH NO PRIOR WARNING. MIL LIGHT TURNS ON, REDUCED ENGINE POWER LIGHT TURNS ON, STABILITRAK OFF DIC MESSAGE DISPLAYS, RESULTS IN LOSS OF ACCELERATION AND REQUIRES THE DRIVER TO IMMEDIATELY TAKE EMERGENCY SAFETY ACTIONS. CODES INCLUDE P2135, P0121, AND P060E…
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VEHICLE GOES INTO REDUCED ENGINE POWER MODE UNEXPECTEDLY WHILE DRIVING WITH NO PRIOR WARNING. MIL LIGHT TURNS ON, REDUCED ENGINE POWER LIGHT TURNS ON, STABILITRAK OFF DIC MESSAGE DISPLAYS, RESULTS IN LOSS OF ACCELERATION AND REQUIRES THE DRIVER TO IMMEDIATELY TAKE EMERGENCY SAFETY ACTIONS. CODES INCLUDE P2135, P0121, AND P060E. ISSUE IS INTERMITTENT, APPEARS MORE FREQUENTLY IN COLD OR WET CONDITIONS. THE ISSUE HAS OCCURRED MORE THAN 10 TIMES SINCE THE INITIAL INCIDENT. DEALER UNABLE TO CORRECT THE ISSUE BY THROTTLE BODY CLEANING AND PCM REPLACEMENT. LATEST ATTEMPT IS TO REPLACE THE THROTTLE BODY. *TR
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.