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    Dirty Diesel Diagnostics

    2.3 (4 reviews)
    Closed 7:30 am - 8:00 pm

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    Services - Dirty Diesel Diagnostics

    Commercial or oversized vehicle towing

    Commercial truck repair

    Fuel delivery

    3 More Services

    Jump-start service

    Vehicle lockout services

    Vehicle towing

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    Recommended Reviews - Dirty Diesel Diagnostics

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    2 months ago

    I have The worst experience they charged me $400 for one hour labor theyre going to rip you off don't ever go there

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    5 months ago

    Very unprofessional. got charged 700 for a 12 mile tow when I was initially told $250 I would definitely not recommend.

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    5 months ago

    horrible service by one of the mechanics. They up charge for everything play the let's throw parts at it until it's fix. DO NOT RECOMMEND

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    8 months ago

    Broke down while passing through, they were fast and helpful, they got us back on the road home in no time! Thank you!

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    J & L Truck Repair

    J & L Truck Repair

    (1 review)

    These guys are a bunch of haks with absolutely zero mechanical integrity or accountability for…read moreservices not rendered properly. I experienced what I assumed was transmission problems while driving through Fontana, CA. in Nov 2025. I was driving a 1999 Fleetwood Pace Arrow with the Ford V10 F-53 chasis. Good Sam towed me to J&L where it was discovered that my flywheel had broken. They jacked up the front end & backed the transmission off so they could get to the flywheel. in doing so they broke a cooling line and spliced it instead of replacing it. They installed the wrong flywheel then left a main transmission wiring harness unsecured which allowed it to fall onto my header and short out three solenoids in my transmission causing catastrophic failure. Additionally, the compression fitting that was used to splice the cooling line leaked so they shoved an O ring in it which eventually clogged the line causing further damage

    From the owner: J & L Truck Repair LLC has proudly served Fontana and the Inland Empire since 2015, specializing in…read moreprofessional diesel semi-truck repair and maintenance. We know how important it is to keep your trucks on the road, so our team provides fast, reliable, and affordable service for both independent drivers and fleet operators. Our services include complete diagnostics, engine repair, brakes, transmissions, suspension, preventative maintenance, and more. Whether it’s a minor fix or a major repair, we get the job done right the first time. We take pride in honest service, competitive pricing, and quality workmanship that truck drivers can count on. Walk-ins are welcome, and we work hard to minimize downtime so you can get back on the road quickly. At J & L Truck Repair LLC, your rig is in good hands.

    Dirty Diesel Diagnostics - truckrepair - Updated May 2026

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