Related: Rainier Starts Building Cabovers
Rainier's Pilot Truck Plant Now Operational
After four months of renovation work, Rainier Truck & Chassis has finally got its pilot production plant operational.

Currently, the company is continuing to spec and secure components for production of its low-cost/low-tech common cab/chassis cabover engine (COE) platform.
Photo: Rainier
After four months of renovation work, Rainier Truck & Chassis, LLC,of Yakima, Wash., has finally got its pilot production plant operational. Currently, the company is continuing to spec and secure components for production of its "low-cost/low-tech" common cab/chassis cabover engine platform.
According to Gary Jones, president of Rainier, "The Pilot plant facility is 6,000 square feet located on 13 acres. The plant will be responsible for producing our first 200 trucks, which will be stall-built in six work stations. We will also have an assembly area for pre-assembly of axles/suspensions, engines and transmissions, fuel and air tanks, cooling and steering systems, etc."
Additional expansion plans are in place for the future, according to the company.
Rainier has added a 36,000-pound GVW Class “Baby” 8 COE truck model to its lineup called the RT 3600. The RT 3600 shares the same cab/chassis components with the rest of the Rainier lineup, except with higher gross axle weight ratings, and heavier-duty suspensions and steering components.
In addition, the RT 3600 comes standard with the Cummins B6.7L 325hp with 750 ft.-lbs. of torque, which is mated to an Allison 3000RDS 6-speed automatic with push button shift selector. With the addition of the Baby 8 model, Rainier can now offer its dealers and customers a complete COE line up from Class 4 to 8. In the future, the company said it is looking to offer higher-horsepower engines and GVW’ ratings in the COE category.
More Vehicle Insights

Mack Defense to Spotlight Common Tactical Truck Line Haul Hybrid Tractor During AUSA 2026
Mack Defense was awarded a contract to design, build, and deliver prototype vehicles for the U.S. Army’s Common Tactical Truck (CTT) program. It will show off its line-haul hybrid tractor prototype, based on the Mack Granite, at the 2026 United States Army (AUSA) Annual Meeting and Exposition.
Read More →
Advance Produces 20,000th Front-Discharge Mixer
Advance celebrated the production of its 20,000th front-discharge mixer, a Commander Series FD4000 mixer. Jack Willard first developed the original Rite-Way Truck in 1964, and then Advance was established in 1972.
Read More →
GM Launches Clean Sheet Duramax 8.3L Turbo-Diesel V8 for 2027 HD Pickups
General Motors previewed key updates for its 2027 HD pickup lineup, which will now include a new Duramax 8.3L Turbo-Diesel, electric power steering, and electronic brake boost.
Read More →
GMC Sierra 1500 Fleet Guide Specs Capability and 2027 Model-Year Updates
The next-generation 2027 GMC Sierra 1500 brings new V-8 engines, more standard safety technology, updated trailering tools, and a work-focused Pro trim. Here’s what fleets need to know.
Read More →
Mack Defense Achieves Cybersecurity Maturity Model Certification Level 2
After an assessment conducted by an authorized Certified Third-Party Assessment Organization (C3PAO), Mack Defense has achieved Cybersecurity Maturity Model Certification (CMMC) Level 2.
Read More →
GM Unveils New Sixth-Generation Small Block Engines for 2027 Light-Duty Pickups
General Motors unveiled two new small-block engines, backed by extensive real-world validation and more than 70 years of small-block V8 manufacturing experience, as part of the engine portfolio for the 2027 Chevrolet Silverado 1500 and GMC Sierra 1500.
Read More →
Chevrolet Silverado 1500 Fleet Guide Specs Capability and 2027 Model-Year Updates
The next-generation 2027 Chevrolet Silverado 1500 brings new V-8 engines, updated technology, expanded safety features, and a fleet-focused Work Truck. Here’s what commercial fleets need to know so far.
Read More →
2026 Ram 1500 Tradesman Put to a Real-World Fleet Test
A few days behind the wheel of a 2026 Ram 1500 Tradesman turned into a test of visibility, parking, work-ready features, and even severe-weather driving.
Read More →
Isuzu N-Series Gas Fleet Guide: Specs, Capability and 2027 Model-Year Updates
Explore Isuzu Truck North America’s N-Series Gas fleet specs, engine performance, GVWR and payload capability, configurations, chassis dimensions, work-focused features, and 2027 model-year information.
Read More →
GM Brings New Truck Focused Interface to 2027 Silverado and Sierra
GM's new pickup interface puts trailering data, camera views, vehicle controls, and smartphone integration closer to the driver in the 2027 Silverado and Sierra.
Read More →

