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A Bit About Us

At J Rock Repair, we specialize in semi truck repair, welding, truck diagnostics and heavy equipment repair. We also offer trailer repair services, giving you the complete package when it comes to keeping your vehicle running smoothly.Our mission is to provide the highest level of service and customer satisfaction with every job we take on. With our team of certified, experienced technicians, you can be sure that your vehicle is in safe hands. Visit us today to get your vehicle up and running!

Contact us for your; Semi Truck, Trailer, and all other repair services in Los Angeles, Ontario Ca,  and surrounding areas.

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Professional Services

Mobile Mechanic, Welding,
Heavy Equipment Repair, RV Repair, Truck Repair, and Trailer Repair

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What We Provide

Your Mobile Mechanic

For years, J Rock Repair has been providing the best semi truck repair, heavy equipment repair, trailer repair, RV repair, and roadside service. We specialize in fast and effective maintenance, ensuring that your vehicle or equipment receives the best care possible. Our experienced team of mechanics is equipped with state-of-the-art tools, giving us a leading edge in providing solutions to any repair needs regardless of the situation. Get fast, reliable repairs from J Rock Repair today!


  • Mobile Mechanic 

  • vehicle lock-out service

  • fuel delivery

  • Fleet Services

  • On-the-spot welding

  • trailer repair

  • trailer wiring

  • transload service

  • regen

  • truck diagnostics

  • Diesel truck repair

  • RV Repair

  • Heavy Equipment Repair

  • Military Equipment


We'd love to hear from you


Find us on Facebook

  • Facebook

Get in Touch Contact us at J Rock Repair

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