Mokena sits right off I-80 in Will County — heavy freight traffic and a tight window when something fails.
J&A Fleet Maintenance provides mobile diesel repair and emergency roadside service in Mokena and the surrounding Will County. When your truck can’t move, we come to you — roadside, yard, or dock — with a quoted rate and a certified tech.
Mokena fleets also get quick reach into Frankfort, New Lenox, and Homer Glen — all dispatched from the same New Lenox shop for the I-80 corridor, so a route that touches more than one of these towns still runs through a single point of contact.
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 — New Lenox shop
For repairs requiring a full shop facility — transmission rebuild, major engine work, welding and fabrication, DOT inspections — our New Lenox shop handles the work. We coordinate transport if needed.
Fleet Maintenance Programs in Mokena
Running a fleet through the Mokena / I-80 / US-30 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.
You hear the hourly rate, the minimum, and any surcharges before we dispatch to Mokena — the same number whether it’s noon or 2 a.m. That’s the whole model, no exceptions and no surprises on the invoice once the truck’s back on the road.
Fleets calling us into Mokena are usually dealing with one of the same handful of issues we see across 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 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 Mokena, 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 Mokena?
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.
