Pick-up
Coordinate free equipment or component pick-up when applicable.
24-Hour Rush Repair
Class 8 shop · Fontana, CA
Semi Truck Repair in Fontana
Fontana is one of the great semi-truck crossroads of America — and a truck down here is freight not moving. Our shop repairs Class 8 tractors mechanically top to bottom: diesel engines, transmissions, differentials, driveline and chassis, with the gear and machine shop depth to rebuild what others replace.
Class 8 shop · Fontana, CA
Heavy-duty mechanical repair and rebuilding
Engine repair and rebuilding, transmission and differential rebuilding, clutch and driveline work, and the chassis and body repairs that follow years of freight work. Everything is inspected and documented before it is quoted, and tested before it is released.
Brands we servicePeterbiltKenworthFreightlinerInternationalVolvoMackCumminsDetroitPACCARCaterpillar
Semi Truck Repair in Fontana · Fontana, CAPositioned where the trucks are
At 14166 Whittram Ave, Fontana — in the middle of the terminal and warehouse districts, with free pick-up and delivery when applicable, free quotes, regular hours Monday–Friday 6 AM–5 PM, and 24-hour rush repair every day of the year.
- Diesel engine repair and rebuilding
- Transmission and differential rebuilding
- Clutch, driveline and chassis work
- Fifth wheel and suspension service
- Truck refurbishment and reconditioning
Our 8-step repair process
A clear path from the first call to a tested component or machine returned to work.
Inspection
Disassemble and evaluate the complete failure.
Photos & video
Document condition and findings for a clear repair conversation.
Repair quote
Define the recommended work and quote before proceeding.
Approval
Confirm scope, urgency and the practical path forward.
Manufacturing
Machine, weld, rebuild or reverse engineer required components.
Testing
Verify operation and workmanship before release.
Shipment
Return the completed component or equipment to service.
Frequently asked questions
Do you rebuild semi transmissions and differentials?
Yes — rebuilding transmissions, differentials and driveline components is core work for this shop, including gear manufacturing for obsolete parts.
Which semi brands do you service?
Peterbilt, Kenworth, Freightliner, International, Volvo, Mack and others, with Cummins, Detroit, PACCAR and Caterpillar power.
Related services
Emergency breakdown? Call the 24-hour rush line.
(949) 400-2937Schedule service or open a repair order
Request a service call.
Include the make, model, symptoms, location, urgency and preferred service time. Your details open in a text to John so you can review them before sending.