The 2008 Yukon Denali came with a Hydra-Matic 6L80-E six-speed automatic transmission. In that year, the Denali's drivetrain paired this electronically controlled gearbox with GM’s 6.2-liter V8 engine on primary configurations.
Drivetrain context for the 2008 Yukon Denali
The Yukon Denali is GM's premium full-size SUV built on the GMT900 platform, offered in both two-wheel drive and four-wheel drive layouts. For 2008, the Denali continued to combine a powerful V8 with a modern six-speed automatic transmission to deliver strong performance and towing capability.
Engine pairing
The standard powerplant for the Denali in 2008 was the 6.2-liter V8, delivering robust horsepower and torque that complemented the smooth operation of the automatic transmission. This pairing was central to the Denali's status as a premium SUV in GM's lineup.
Transmission pairing
The transmission used is the Hydra-Matic 6L80-E—GM's six-speed automatic that is electronically controlled and designed for both rear-wheel drive and four-wheel drive configurations found in GM full-size SUVs.
Transmission characteristics
The following list summarizes the core features and compatibility of the 6L80-E in the 2008 Yukon Denali.
- Hydra-Matic 6L80-E six-speed automatic transmission
- Electronically controlled with adaptive shift logic for smooth performance
- Designed to pair with the 6.2L V8 engine and GM's GMT900 platform
- Available in both two-wheel drive and four-wheel drive configurations
- Includes Tow/Haul mode and a torque-converter lock-up for improved fuel efficiency
In sum, the 2008 Yukon Denali uses the 6L80-E transmission, a modern, six-speed automatic that was standard for GM's premium SUVs on that platform, delivering a balance of power and efficiency.
Summary
For 2008, the Yukon Denali's drivetrain centered on the Hydra-Matic 6L80-E six-speed automatic transmission, paired with the 6.2-liter V8. This combination defined the Denali's smooth, capable performance during that model year.
What transmission does a 2008 GMC Yukon Denali have?
six-speed automatic transmission
The GMC Yukon Denali comes with a 6.2-liter V8 engine, six-speed automatic transmission, autoride suspension and standard AWD.
What year did Silverado get 6L80E?
The arrival of 6L80E transmissions – or Hydra-Matic 6L80 transmissions – on the automotive scene in 2006 showcased the considerable design change of the automatic transmissions that General Motors created. Before now, every transmission produced by General Motors was practically based on hydraulic controls.
How do I tell if I have a 4L60E or 6L80E?
Control like the other GM automatics the easiest way to identify a 4L80 is to look at the shape of the pan. And you can see compared to this 4L60 pan that the 4L80 pan is just enormous.
What year to stay away from Yukon Denali?
But not every Yukon is created equal. With a reputation for questionable reliability, caution is essential—especially when you're considering a used vehicle. Avoid the most problematic model years, like the 2015 GMC Yukon, and be wary even with luxury trims like the Yukon Denali.