Frankfort operators run freight through southern Will County into Cook and beyond. A breakdown here needs a fast response.
J&A Fleet Maintenance provides mobile diesel repair and emergency roadside service in Frankfort 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.
Frankfort fleets also connect us to Mokena, Homer Glen, and Manhattan — all covered out of our New Lenox shop as freight moves between Will and Cook County.
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 Frankfort
Running a fleet through the Frankfort / US-30 / LaGrange Road 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.
We don’t replace a part in Frankfort because someone thinks it’s bad. We find the root of the problem and fix that — no guessing on your dime, whether the truck’s at a dock or stranded on the shoulder.
In Frankfort, the calls we run most often are the same ones that stall a fleet anywhere on the Will County corridor: air brake chambers that won’t release, an alternator that’s stopped charging, or a transmission that’s slipping under load. We diagnose each one to the root before a part gets ordered — no swapping parts on a guess, and no second visit because the actual problem never got found the first time. That’s the standard whether it’s a scheduled stop or a call that came in an hour ago.
DOT compliance doesn’t pause because a truck is stuck in Frankfort — an out-of-service violation from a missed brake adjustment or a bad marker light costs a lot more than the repair itself. Our techs catch it on the same visit, whether that’s a scheduled inspection or an emergency roadside call. If you’re running multiple units through Will County on a regular route, ask about setting up a standing maintenance schedule instead of waiting for the next breakdown to make the call — oil changes, brake inspections, and compliance checks on your calendar, not ours.
Down in Frankfort?
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.
