2006 GMC Envoy Denali Engine cooling Problems
- Complaints
- 4about this part
- Share
- 5%of 84 total for the year
- Median mileage
- 65,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine cooling of the 2006 GMC Envoy Denali, 5% of the 84 complaints for this model year. Where a mileage was given, the median is 65,000 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.
“My Gmc Envoy Denali 2006 uses up to 2 to 3 quarts of oil in a 30 day period. I have no leaks or exhaust problems. It finally collapsed a lifter and push rod. Says there is no notice or recall, but the is the same engine they used in the 2003 pontiac, they did recall those motors. Does any one have some help for me?”
NHTSA complaint #10453141, filed 2012-03, 65,000 miles“Fuel sensor failure in the gas tank. Causing the fuel tank to read empty when full, causing the SUV to stall when the tank is full, causing the check engine light to come one. This is a safety issue.”
NHTSA complaint #10413389, filed 2011-07, 42,000 miles“Reduced power light came on when on the highway. Almost got hit by a semi. This has happened many times. The engine has only 8k miles since engine was replaced under warranty.”
NHTSA complaint #10438109, filed 2011-12, 116,000 miles“2006 Envoy Denali. Consumer writes states gas needle stopped functioning the consumer stated the gas needle began to fluctuate in the beginning and since that time, the needle has been stuck on empty, and the engine light illuminated as a result. In march of 2009, when the consumer stared the vehicle, it sounded as if there was something metal tumbling around under the hood. Upon inspection of the vehicle, it was determined the engine needed to be replaced. On june 10, 2010, the vehicle would not start and had to be towed to the dealer. An inspection revealed a starter was needed. …”
NHTSA complaint #10420249, filed 2011-08Related service bulletins
- 10251887Mar 14, 2024This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.
- 10251890Mar 13, 2024This technical 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…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10250347Feb 2, 2024This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10245395Nov 6, 2023This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing…
- 10244273Oct 6, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
- 10242843Sep 1, 2023The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10239101Jun 30, 2023This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2007 | 2 | 6% |
| 2006 | 4 | 5% |
Other parts of the 2006 GMC Envoy Denali
27 complaintsElectrical system
19 complaintsEngine
12 complaintsSuspension
10 complaintsExterior lighting
8 complaintsTransmission and drivetrain
8 complaintsElectronic stability control
7 complaintsOther or unknown
4 complaintsVisibility (wipers, defrost, mirrors)
4 complaintsEquipment
3 complaintsSteering
3 complaintsVehicle speed control
3 complaints
← All problems reported for the 2006 GMC Envoy Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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