2015 Chevrolet, GM 1500 Trucks Get 8-Speed Transmission
General Motors will pair a new 8-speed transmission with its V-8 engine offered on 2015 Chevrolet Silverado 1500, GMC Sierra 1500, GMC Yukon Denali, and Yukon XL Denali models.
Photo of 2015 Chevrolet Silverado LTZ courtesy of GM.
Photo of 2015 Chevrolet Silverado LTZ courtesy of GM.
General Motors will pair a new 8-speed transmission with its 6.2L V-8 engine offered on 2015 Chevrolet Silverado 1500, GMC Sierra 1500, GMC Yukon Denali, and Yukon XL Denali models.
The Hydra-Matic 8L90 automatic transmission replaces the Hydra-Matic 6L80 6-speed automatic transmission. The 7.0 overall gear ratio spread is wider than the 6-speed and provides a numerically higher first-gear ratio to help drivers pulling a heavy load during trailering. The 8L90 also enables numerically lower rear-axle ratios that reduce engine rpm on the highway.
The 6.2L EcoTec3 V-8 provides 420 hp and 460 lb.-ft. of torque. General Motors has adopted the SAE J2807 towing standard for its 2015-MY trucks. Versions of the trucks with the V-8 and Max Trailering Package maintain their tow ratings of 12,000 pounds.
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Originally posted on Automotive Fleet
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