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.

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

Very professional and knowledgeable. He diagnosed and fixed my truck same day, would use his…read moreservices again

Owner was very upfront with the process the entire time. His communication was top notch and got me…read moreout within 24 hours.

Very very poor service they put a brand new clutch and didn't put all the bolts back a year later…read morethe clutch went out had to put new clutch Again I wouldn't trust ATG at all

From the owner: Drivetrain parts and services for Diesel Trucks Clutches,…read moreTransmission, Drivelines, U-Joints, Yokes, Differentials, Seals, and more

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.

This is the place you take your Semi truck if you need any body work what's so ever…read more Our truck was hit by a hail storm in Alabama after the route was complete and we brought it here. Very professional and honest individuals that go above and beyond to keep you as a customer happy. Fair warning ! The work gets done so well and they're so busy that you will have to sacrifice a little more time for that

From the owner: Heavy Duty Truck Collision Repair, Suspension, Aluminum Body Repair, Fiberglass Repair &…read moreFabrication and Frame Correction. We have been under the current management & ownership since 1989 providing Collision, Paint, Frame Repair, Fiberglass, Aluminum Repairs and Suspension & Alignment for the heavy duty truck industry. We are experts in the field of Fleet company and Owner Operator and Insurance company clients that span across the nation. Whether you own 1 truck or 5,000 we have the experience required to get your truck/s back on the road with minimal downtime. We offer a lifetime guarantee on all labor and 10 year warranty on paint jobs.

We were referred to Fleet Tek by a friend. We have a 2016 KW T680. These guys got to the root of…read morethe problem and actually educated us on why it was happening. They got to the source of what needed to be done and got us fixed up the the right way! they are not just parts replacers! Found out they can also do BIT and Annual DOT inspections... and fix trailers. Very happy we gave these guys a try!!

From the owner: Fleet Tek Fontana specializes in commercial diesel truck repair and offers the following services:…read more Airbag Replacements, A/C Repairs/Recharge, Air Leak, Repairs, Battery Services, Belt Replacements, BIT/DOT, Inspections, Brake Services, Diagnostics and Troubleshooting, Differential Services, Electrical Repairs, Liquid Leak Repairs, Oil Changes, Radiator & Cooling System Repairs Wheel Seal Services Tire Replacement/Repair/Sales Transmission Service Trailer Services Tune - Ups

Had an appointment on Saturday May 4 for service on our motorhome. Drove an hour in a half to drop…read moreoff just to be told they decided to close the office today and take the day off. No one notified us of this. Very unorganized. Tried calling on Monday to find out what happened and could not get through to anyone. Would not recommend this facility!

I had a f150 lightening reservation. Per the email from Ford I could not order and keep my…read morereservation due to their only manufacturing Lariats And Platinums. I opted.to not order and keep my reservation for later use. This stealership ordered.a truck using my reservation, not cool. I intend to seek damages for money lost and stress incurred.

Good service they got me in and out quick and Edward the mechanic is really professionalread more

From the owner: Truck repair tire change Load shifting read more

2000 Peterbilt 377 all major repairs@ maintenance has been for me a very professional and good…read moreprice , for the last 10 yrs at this place having oil cooler replaced and full B service.

I am very UNSATISFIED with there customer service i took my truck in and they gave me an Attitude…read moreto cover it under warranty