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.
Related:
Originally posted on Automotive Fleet
More Operations
Top 50 Executive Fleets
It is that time of year again! Time for the 2026 list of the Top 50 Executive Fleets, presented by Automotive Fleet and Volvo as part of its annual Fleet 500. Download now to see this year's list of companies!
Read More →
Behind the Scenes: Building the Ringmaster of the Road from Body to Paint Part 2
The body is built, the paint is on, and Team Fletcher’s Soap Box Derby car is nearly ready for testing ahead of race day in Akron.
Read More →
It's All Downhill from Here! Fleet Industry Raises $22,000 for Skilled Trades Scholarships
Work Truck’s Lauren Fletcher and Automotive Fleet’s Chris Brown turned a friendly racing rivalry into $22,000 for automotive technology and skilled trades scholarships.
Read More →
Fleet Confidence, Safety, and Smarter Risk Management Lead This Month
This month’s TruckChat: Top Monthly News Recap explores what it takes to build confidence across a fleet, from stronger leadership and technician support to better safety preparation, smarter use of telematics, and clearer plans for when something goes wrong.
Read More →
From Fleet Operator to OEM Leader: Tina Kourakos’ Career Lessons
Tina Kourakos shares the lessons, relationships, and career pivots that shaped more than 30 years in fleet, plus the advice every new fleet manager should hear.
Read More →
WEX Brings Standard Fleet's Connected Vehicle Platform to Fleet Customers
This week’s product launch with Standard Fleet’s connected vehicle platform reflects WEX Venture Capital's strategy of turning startup innovation into customer solutions. Standard Fleet is now available to WEX fleet customers.
Read More →
Meet Atlas: Motive's AI Assistant for Fleets
Artificial intelligence is becoming a practical tool for fleet operations. In this video, Emily Parsons introduces Atlas, Motive's AI-powered assistant that combines conversational search with the ability to perform actions across the Motive platform.
Read More →
The Top 300 Commercial Fleets
The Top 300 Commercial Fleets: See the List
Read More →
NTEA Releases Updated Federal Excise Tax Guide for the Work Truck Industry
NTEA’s latest revised edition of its Federal Excise Tax Guide for the Work Truck Industry is now available to help fleet leaders navigate complex federal tax requirements.
Read More →
Super Dispatch Powers Centralized Vehicle Transport Operations for Merchants Fleet
Merchants Fleet has replaced fragmented transportation processes with Super Dispatch’s unified, API-powered platform to improve visibility, automation, and carrier performance.
Read More →