Collection
Where it applies, we arrange collection of your equipment or component at no charge.
24-Hour Rush Repair
Fontana, CA · Independent Peterbilt truck service
Peterbilt Truck Repair in Fontana
Owners keep Peterbilt trucks for decades — 379 and 389 models still earning every day, 579 tractors running regional freight, 567 models on vocational work. Our Fontana shop repairs Peterbilt trucks across every system on board: Cummins and PACCAR MX engines, Eaton and automated transmissions, aftertreatment, axles, suspension and chassis. We are an independent shop, not a Peterbilt dealer — heavy-truck work carried out to a rebuild standard, with machining and gear manufacturing in the same building.
Fontana, CA · Independent Peterbilt truck service
The Peterbilt jobs that fill our week
In-frame engine jobs on the Cummins ISX and X15 and the PACCAR MX-13; transmission and clutch servicing; DPF and SCR aftertreatment diagnosis with derates traced through; differential and driveline rebuilding — gears are the founding trade of this shop; air system, brake and suspension work; and the frame, fifth-wheel and body-mount repairs a working truck accumulates over the years. A Peterbilt is a long-term asset, and we repair it that way.
Makes we work onPeterbilt
Peterbilt Truck Repair in Fontana · Fontana, CAWhy Peterbilt owners choose Fontana
Dealership diesel bays tend to carry long waits and dealership invoices to match. We hold ourselves to that same standard of work, but you see everything: the teardown is photographed and filmed, worn components get measured and shown to you, pricing arrives in writing before a wrench turns, and pick-up and delivery cost nothing when applicable. We are open Monday–Friday, 6 AM–5 PM, and the rush line stays live 365 days a year — a parked truck makes nobody any money.
- Repairs and rebuilds for Cummins ISX/X15 and PACCAR MX engines
- Work on transmissions, clutches and drivelines
- Differentials and gears rebuilt on site
- Aftertreatment and derate fault tracing
- Servicing for chassis, suspension and brakes
How a repair moves through our shop — eight steps
From your first phone call through final testing, this is the route every job follows before it goes back into service.
Inspection
We take the unit apart and assess the full extent of the failure.
Photo & video record
Condition and findings get recorded, so the repair conversation stays clear and honest.
Written quote
The work we recommend gets defined and priced before anything proceeds.
Your approval
Scope, urgency and the sensible way forward get confirmed with you.
Making & rebuilding
Components get machined, welded, rebuilt or reverse-engineered as the job requires.
Testing
Operation and workmanship are verified before anything is released.
Return
The finished component or machine goes back into service with you.
Questions customers ask us
Are you affiliated with a Peterbilt dealership?
No — ours is an independent repair shop that looks after Peterbilt trucks, with no dealership affiliation implied; the quality of the work is the whole pitch.
Do you rebuild engines, or only repair them?
Both — everything from top-end jobs through full in-frame and out-of-frame rebuilds, with the machining handled in-house.
Will you take on older 379 and 389 trucks?
Yes — classic Peterbilt models are regular work here, covering engines, transmissions, differentials and chassis repairs.
More services from our shop
Truck down right now? Reach the around-the-clock rush line.
(949) 400-2937Book a service visit or start a repair order
Ask for a service visit.
Tell us the make and model, what the truck is doing, where it sits, how urgent it is, and when you would like us there. The form opens everything as a text message to John, so you can check it over before you hit send.