About Ultimate Truck Service
Ultimate Truck Service in Ridgefield, Washington handles diesel diagnostics and repair work across a 15-mile service radius, drawing on ASE, Cummins, and Detroit Diesel certifications to service heavy-duty trucks and trailer systems. Located near Interstate 5, the shop serves the freight corridor stretching from Vancouver, Battle Ground, and Portland, Oregon to Scappoose and St Helens, positioning it centrally for owner-operators and fleet managers moving cargo through the Pacific Northwest. The operator works on Cummins and Detroit Diesel engines, diesel-specific diagnostics, and trailer repair to keep equipment running. Call (360) 574-6886 for service.
Gallery
Our Services
ASE Certified
Cummins Certified
Detroit Diesel Certified
Diesel Specialist
Customer Reviews
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Verified Customer
Google Review
We bought a 2018 RV on a Ford Sprinter Chassis. We drove it home with the engine light on and took it to Ultimate Truck the next morning. We wanted mechanics with a long standing presence and good ratings form others. The repair turned into ...
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Verified Customer
Google Review
These guys literally saved us. We were beyond the point of no return on a trip in our large converted school bus with a CAT diesel when we noticed at a rest stop that it had a heater pump dumping coolant on the ground. They noticed the ...
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Verified Customer
Google Review
This place is the absolute best! We've spent an entire year trying to get an exhaust leak diagnosed and repaired on our brand new motorhome. It was taken to 2 other shops that failed to even diagnose the issue. Ultimate Truck Service was ...