Round Rock, TX & Surrounding Areas
RV Won't Move?
We Come to You.
Round Rock's premier mobile RV chassis specialist — engine, brakes, suspension, and drivetrain repair delivered to your location.
What We Fix
Full Chassis Repair. Zero Tow Trucks.
We handle the mechanical side of your RV — the systems that keep it moving safely down the road.
Engine Repair & Diagnostics
Full engine diagnostics, tune-ups, oil systems, cooling, and major engine repairs on Class A, B, and C motorhomes. We bring the tools to you.
Brake Systems
Brake pad replacement, rotor resurfacing, caliper service, brake fluid flushes, and full hydraulic brake system inspections.
Suspension & Steering
Shock absorbers, leaf springs, ball joints, tie rods, and alignment checks. We restore ride stability and handling confidence.
Drivetrain & Transmission
Driveshaft, U-joints, differential service, transmission fluid, and drivetrain diagnostics for gas and diesel chassis.
Electrical & Starting Systems
Battery testing and replacement, alternator and starter service, chassis wiring diagnosis, and 12V system troubleshooting.
Exhaust & Fuel Systems
Exhaust leak repair, fuel pump replacement, fuel filter service, and emissions-related diagnostics for motorhome chassis.
Why Mobile Service
No Tow. No Wait. No Hassle.
Getting your RV to a shop is a logistical nightmare. We eliminate that entirely.
We Come to Your Location
Campsite, storage lot, driveway — wherever your RV is parked, we show up with a fully equipped service vehicle.
Faster Turnaround
No shop queue, no waiting weeks for an appointment. Most repairs are completed same-day or next-day.
Transparent Pricing
You get a clear estimate before we start. No surprise charges, no upsells — just honest work at a fair price.
Chassis Specialists Only
We focus exclusively on the mechanical chassis — engine, brakes, drivetrain. That specialization means faster diagnosis and better results.
Factory Certified
Cummins OnanAuthorized Dealer
JS Mobile Repair is a factory-certified Cummins Onan Authorized Warranty Dealer — one of the few mobile RV repair services in Central Texas with this designation. We carry OEM parts, perform warranty repairs, and service all Cummins Onan generator models.
Stranded on the Road?
We've Got You.
Call now and get a mobile RV chassis specialist dispatched to your location in the Round Rock area.