GM Confirms 8-Speed Auto for Chevy Silverado, GMC Sierra and Yukon

When GM released the new Chevrolet Silverado and GMC Sierra pickup trucks in 2013 and the latest GMC Yukon SUV earlier this year, they were offered with a 6-speed auto transmission. Now, GM is stepping up a gear, or rather two, as starting from this fall, the 2015MY Chevy Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali models with the 420hp 6.2-liter EcoTec3 V8 will have a standard 8-speed automatic. Read more »