Superb service and support! FTR really got me out of a difficult situation with my vehicle which…read moreneeded a full engine replacement! The team went the extra mile to help me get it to the shop. They were helpfully informative with their diagnosis and repair plan. They took care of finding good quality parts while ensuring that the job was completed in a timely manner. I was back on the road before I knew it! For context, I went with this after receiving a ridiculously high quote from a different shop. This place offered me a reasonable price while giving me a piece of mind.

Great honest and reliable service. They have serviced our diesel motorhome and truck several times…read moreover the years. They also do house calls. I recommend their service.

Fast & Great service would recomend to everyone that need services on the truck. Even does annuel…read moreinspections.

I took my Cummins Diesel Motorhome to a high end truck shop, they spent the whole day with it and…read morecouldn't figure out the issue, I called Juan and he came to my house, diagnosed and fixed my motorhome, he changed the lift pump and fuel filter and had me back on the road! Juan, Andres and Jerry are good hardworking men, I will definitely call them back if I need help in the future.

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

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

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.

He came to our house to fix our motorhome and went through everything! He fixed it perfectly and…read moreis reasonable with his costs. I will recommend him to anyone who asks me where i go to get my motorhome fixed when it comes to diesel engines. Best i have ever come across!

Best Service around, timely and professional, definitely will use again if I'm in a pinch.read more

Stopped in to get the pump and nozzles for wiper fluid fixed on my tractor. It was a weekday…read moremorning and they were able to pull me in and start working immediately. It took a little over an hour. Pros: quickly serviced me and quickly got me out of there in about an hour. Price on nozzles was pretty good. Cons: price on the pump was meh. A week or two later, the line to the wiper nozzle got disconnected because it wasn't long enough and there was too much tension when using the wipers. I had to reroute the line and secure it differently in order for the line to remain connected with regular usage. Really simple fix, but I just paid someone $300 to have my wiper fluid system in good working order. This shouldn't have been an issue... and my line is still pretty short. I just had to work around it. If I wasn't using the company card on a company truck, I'd have saved myself $240 and done it myself.

Only mechanics that I trust! They do amazing work on repairs and they're honest with everything. So…read moreif you're in the I.E and you need repairs done to your Semi Truck definitely take it here