2006 GMC Envoy Denali Transmission and drivetrain Problems
- Complaints
- 8about this part
- Share
- 10%of 84 total for the year
- Median mileage
- 24,040miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 8 complaints about the transmission and drivetrain of the 2006 GMC Envoy Denali, 10% of the 84 complaints for this model year. Where a mileage was given, the median is 24,040 miles. 1 of these say a crash was involved, according to the filers.
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.
“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.”
NHTSA complaint #10689503, filed 2015-02, 34,961 miles“2006 Gmc Envoy Denali purchased 12/05. Beginning at about 10,000 miles the transmission would shift abruptly into 1st gear after the car had stopped moving. This does not happen every time but when it does it feels as if the car has been hit from behind. Dealer has not been able to duplicate the problem but states that other owners have reported the same problem.”
NHTSA complaint #10227208, filed 2008-05, 10,000 miles“- the contact owns a 2006 Gmc Envoy Denali. There was a vibration in the vehicle when the gas pedal was applied while traveling between 30 and 40 MPH. The vehicle would also vibrate at any speed. It felt and sounded as if it needed to shift gears, as in a manual vehicle, but was in the wrong gear. It was involved in a crash in november 2006. Two dealers stated that there was a technical service bulletin that referenced the failure, but there was nothing they could do to correct it. When engaging the brake the vehicle would move forward and a noise could be heard. …”
NHTSA complaint #10187958, filed 2007-04, 13,118 miles“I have had my Gmc envoy into the dealership on multiple occasions for a noise coming from the rear. I've been told that it is just a flaw in the design but it is a very annoying flaw. The noise is a constant squeal that only goes away if I take the vehicle out of overdrive. The dealership said from me not to drive the vehicle in overdrive because there wasn't anything they could do to fix it. As time goes on, the noise seems to be getting louder.”
NHTSA complaint #10272837, filed 2009-06“When starting my vehicle and start to drive I notice 2 check engine lights pop on. One engine light has a arrow pointing down and the other just have the engine light symbol and the my speed starts to reduce a lot. I will pull over to the side of the road shut the car off wait for 5-10 minutes and crank it up and after maybe 15-20 minutes of driving it pops back on. I've had the mechanic to diagnostic machine and he has said the throttle body needs changing, had that done and the same problem came back. So I had my old one put back on and then the mechanic say maybe it's the gas pedal sensor. …”
NHTSA complaint #10904720, filed 2016-09Related service bulletins
- 11006421Jul 24, 2024GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or…
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 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…
- 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…
- 10234619Apr 6, 2023This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 10228863Dec 13, 2022This 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…
- 10227241Nov 18, 2022This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and…
- 10222770Sep 16, 2022This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification.
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2006 | 8 | 10% |
Other parts of the 2006 GMC Envoy Denali
27 complaintsElectrical system
19 complaintsEngine
12 complaintsSuspension
10 complaintsExterior lighting
8 complaintsElectronic stability control
7 complaintsEngine cooling
4 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 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