2006 GMC Envoy Denali XL Engine Problems
- Complaints
- 5about this part
- Share
- 12%of 42 total for the year
- Median mileage
- 97,644miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine of the 2006 GMC Envoy Denali XL, 12% of the 42 complaints for this model year. Where a mileage was given, the median is 97,644 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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. …”
NHTSA complaint #10958860, filed 2017-03, 85,287 miles“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.”
NHTSA complaint #10694031, filed 2015-03, 110,000 miles“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. …”
NHTSA complaint #10491433, filed 2013-01, 20,000 miles“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 updated 04/22/2013”
NHTSA complaint #10498043, filed 2013-02, 128,623 milesRelated service bulletins
- 11007091Aug 5, 2024This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 11004761Jun 28, 2024This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or…
- 10211658May 2, 2022This service bulletin provides policy information on warranty administration guidelines for multiple repairs with independent causes (GM Canada Dealers Only).
- 10082869Aug 29, 2016This informational bulletin provides additional information on how to install pistons and suggest what tools to use.
- 10082822Aug 12, 2016This informational bulletin provides information on how to test a battery and what is needed to warranty a battery.
- 10082814Aug 2, 2016This informational bulletin provides information to gm dealers on the correct cleaning methods when cleaning engine gasket sealing surfaces.
- 10082820Aug 1, 2016This informational bulletins provides information on the intake manifold inspection/replacement after servere internal engine damage.
- 10201098Dec 1, 2015OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
- 10190503Dec 1, 2015OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2006 | 5 | 12% |
Other parts of the 2006 GMC Envoy Denali XL
19 complaintsElectrical system
6 complaintsTransmission and drivetrain
5 complaintsBrakes
4 complaintsExterior lighting
3 complaintsSuspension
3 complaintsVehicle speed control
3 complaintsAir bags
2 complaintsElectronic stability control
2 complaintsOther or unknown
2 complaintsBody and structure
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaints
← All problems reported for the 2006 GMC Envoy Denali XL
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology