Lemont operators run trucks across two county lines on some of the heaviest freight routes in Chicagoland.
J&A Fleet Maintenance provides mobile diesel repair and emergency roadside service in Lemont and the surrounding Cook & Will County. When your truck can’t move, we come to you — roadside, yard, or dock — with a quoted rate and a certified tech.
Lemont fleets also connect us to Lockport, Homer Glen, and Bolingbrook — all covered out of our Rockdale shop across the Cook-Will county line, so a route that crosses the county line doesn’t mean a second call to a different shop.
Our Services
- Diesel & Engine Repair— Root-cause diagnostics and repair for all Class 6–8 diesel engines — no guesswork, no unnecessary parts.
- Semi-Truck Roadside Assistance — 24/7 mobile dispatch across northeastern Illinois — certified techs come to your truck, not the other way around.
- Air Brake Repair — Chambers, valves, compressors, and frozen lines — complete air brake system service and DOT compliance.
- Electrical & Alternator — Advanced diagnostics trace electrical faults to the source — wiring, batteries, alternators, and charging systems.
- Cooling, Radiator & A/C — Radiator, coolant system, and cab A/C repair — keeping engines and drivers running at the right temperature.
- Transmission Repair — Automatic and manual transmissions, differentials, and clutches — diagnosed before a single part is ordered.
- Welding & Fabrication — Certified welders for frame repair, trailer structural work, and custom fabrication — shop or roadside.
Pricing — Same Rate Whether You’re Stranded or Not
J&A Fleet quotes our hourly rate, minimum, and any surcharges before we dispatch. The price doesn’t change because you’re stranded. Overcharging a customer in a tough spot is something you’ll never experience with J&A Fleet.
Shop Work — Rockdale shop
For repairs requiring a full shop facility — transmission rebuild, major engine work, welding and fabrication, DOT inspections — our Rockdale shop handles the work. We coordinate transport if needed.
Fleet Maintenance Programs in Lemont
Running a fleet through the Lemont / Stevenson Expressway / I-55 corridor? Ask about our mobile maintenance program. We come to your yard on a schedule, keep your units DOT-compliant, and reduce the unplanned downtime that eats into margins.
Our techs are certified on big rigs — Lemont fleets get it done right the first time. Trying to fix a diesel problem without the right equipment usually costs more in the end than the original repair would have, and costs another day of downtime on top of it.
Fleets calling us into Lemont are usually dealing with one of the same handful of issues we see across Cook & Will County: electrical and charging faults, air brake components failing in cold weather, or a cooling system problem that won’t wait for a scheduled shop visit. We diagnose it on site and quote the rate before we start, so the number you hear at dispatch is the number on the invoice — no matter how far out the call takes us.
Fleets that run Cook & Will County more than once or twice a month tend to save money moving from one-off roadside calls to a standing maintenance schedule — same certified techs, same upfront rate, but planned instead of reactive. In Lemont, that means fewer surprise DOT violations from things like worn brake linings or a bad marker light, and less unplanned downtime eating into the load schedule your dispatcher is trying to hold together week to week.
Down in Lemont?
Tell us where the truck is and what it’s doing. We’ll give you an ETA and a quoted rate — then get a certified tech moving toward you.
