The spread of General Motors’ eight-speed programmed transmission through the GMC Sierra 1500 lineup is almost finished. Acquainted with the Sierra in 2015 combined just with the greatest motor accessible, a 420-hp 6.2-liter V-8, the eight-speed has subsequent to wind up an alternative on specific Sierras outfitted with the 5.3-liter V-8, following a way through the Sierra family like the same transmission’s infusion into the Chevrolet Silverado lineup.

2016 GMC Sierra 1500 Denali

• Share on Facebook.
• Share on Twitter.
• Share on Google+