General Motors and Workhorse Expand Class-C Chassis Portfolio
LOUISVILLE, KY – General Motors announced the availability of the 6.6L Duramax turbo-diesel engine for the 12,300-lb. Class-C chassis. In addition to the 14,050-lb. chassis, General Motors has also announced that it will co-brand its 12,300-lb. and 9,600-lb. GVWR chassis with Workhouse Custom Chassis. All three chassis come standard with the Vortec 6.0 V-8 engine.

LOUISVILLE, KY – General Motors announced the availability of the 6.6L Duramax turbo-diesel engine for the 12,300-lb. Class-C chassis. In addition to the 14,050-lb. chassis, General Motors has also announced that it will co-brand its 12,300-lb. and 9,600-lb. GVWR chassis with Workhouse Custom Chassis. All three chassis come standard with the Vortec 6.0 V-8 engine. “We believe our chassis for the Chevy Express van delivers exactly what motor home customers want from their RV – exceptional capability, durability and power, with the comfort and convenience they’ve come to appreciate from GM vehicles,” said Ross Hendrix, General Motors market-ing director of vans and trucks. With the Chevrolet/Workhorse Class-C Chassis, an independent short/long-arm (SLA) front suspension provides both ride quality and long-term durability. The chassis’ sharp turning radius allows the driver to maneuver in and out of tight spots with ease, adding to driver comfort. Inside, the chassis delivers more legroom and interior space for the driver and passenger, including larger step pads and wider footwells. There’s also more functional storage, including deep and wide door storage pockets. The Chevrolet/Workhorse Class-C 12,300 chassis can now be powered by a Duramax turbo-diesel engine that delivers a class-leading 250-hp and 460-lbs-ft. torque run through a 4L85-E heavy-duty four-speed transmission. All three chassis – the 14,050, the 12,300-lb. and the 9,600-lb. – are matched to the four-speed elec-tronically controlled automatic transmissions with a 300-hp Vortec 6.0L V-8 engine. Braking performance is provided by the standard four-wheel disc anti-lock brake system with Dy-namic Rear Proportioning (DRP). DRP adjusts brake pressure toward the front or rear of the vehicle; therefore, optimizing front and rear-brake performance under varying loads and road surfaces. General Motors builds all of the Class-C chassis at its Wentzville Assembly Center in Missouri. Production is expected to begin in January 2006.
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 →
Gary Van Orden Retires After Nearly Four Decades in Commercial Fleet
From answering customer calls at Ford Motor Company to leading fleet sales across multiple OEMs and a fleet management company, Gary Van Orden's career reflects nearly four decades of leadership in commercial fleet.
Read More →
How Stellantis Plans to Get Ahead of Fleet Downtime
Vehicle acquisition may grab the headlines, but fleet uptime increasingly determines operating success. Darren Bradshaw of Mopar North America gives the details.
Read More →
Hyundai Releases 2027 Commercial Program Incentives
The 2027 Model Year "Fleet Street Incentives" are available to commercial and government fleets.
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 →The Top 300 Commercial Fleets
The Top 300 Commercial Fleets: See the List
Read More →
Your Local Dealer Knows More Than You Think
Your local dealer can provide an information advantage that extends well beyond courtesy deliveries.
Read More →
Fleet Meets: Austin Schutte
Here are some industry insights, personal touches, and words of advice from the CEO and Founder of Anew Solutions.
Read More →Soap Box Derby Challenge: What’s Powering Team Brown
The car is coming together, the students are solving real build problems, and the fleet industry is helping push Team Brown toward the starting line.
Read More →
