OnSite Truck & Equipment Repair
OnSite Truck & Equipment Repair is a heavy-duty truck and diesel repair shop based in Fontana, California, that also works on RVs.
8364 Sultana Ave, Fontana, CA 92335. Confirm by phone before driving over.
J & L RV Repair is a full service RV repair shop based in Fontana, California. You bring the RV to its facility rather than the other way around, so plan on dropping off the coach for the work to be done there.
The shop handles body and paint work, front and rear cap repair and replacement, roof repairs and replacements, slide-out leveling and repair, sidewall repairs, and leveling hydraulic and electric systems. Inside the coach it covers cabinets, flooring and upholstery, holding tanks, inverters and converters, 12V and 110V electrical diagnostics, transfer switches and major appliances. It also works with insurance carriers on full body collision repair after an accident.
No trip fee or hourly rate is published, so ask about pricing when you call. There is no published service area beyond its Fontana location and no posted hours, so confirm both when you reach out.
J & L is an authorized warranty repair facility for a long list of manufacturers, including Forest River, Jayco, Tiffin, Thor, Coachmen, Heartland, Newmar and Nexus RV, among others. That matters if your RV is still under factory warranty, since a shop with that standing can often get warranty work approved and done without routing you elsewhere first. The business has been family owned and operated since 1984, run by Joe and Martha Lozoya, with Joe's son Michael and office manager Joelene also part of the team.
Google rates it 4.5 stars from 86 reviews.
This is a good fit for an owner with a Class A motorhome or motor coach needing body, slide-out, roof or electrical work done at a shop, especially one still covered under a factory warranty from one of the brands above.
| Based in | Fontana, California8364 Sultana Ave, Fontana, CA 92335 |
|---|---|
| Service area | “Fontana”jandlrvrepair.com |
| Trip fee and hourly rate | |
| Hours | |
| Works on | Roofs and sealantsSlide-outs and levelingElectrical, inverters and convertersHolding tanks and toiletsBody, fiberglass and paintAppliancesListed at jandlrvrepair.com. This is what they list, not a limit; ask about anything else. |
| Certifications | |
| Listed as | “body and paint work; slide outs; front and rear caps; roof repairs; leveling hydraulic and electric systems; sidewall repairs; interior work from cabinets, flooring and upholstery; holding tanks; inverters and converters; 12V and 110V system diagnostic and repair; major appliances; electrical systems and charging systems; transfer switches” |
| Time in business | “in business over 30 years” |
| Google rating | 4.5 of 5, 86 reviewsGoogle Maps listing, read October 7, 2026 |
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