Yukon / XL / Denali

Silverado, Sierra, Yukon Denali with V-8 to feature new 8-speed transmission

1:57 pm U.S. ET | July 18, 2014

A new eight-speed automatic transmission will come standard on some 2015 Chevrolet Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali models with a 6.2-liter EcoTec3 V-8 engine, GM said today....
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