
A truck in derate or throwing aftertreatment codes doesn't wait, and neither do we — we diagnose the DPF, DEF, and SCR system, tell you straight what's actually wrong, and get you cleared to run. Most jobs go same day, next day at the latest, because the sensors and DEF parts most shops have to order are already on our shelf. Diagnosed and quoted by someone who ran this equipment, in English, Russian, or Spanish.
Aftertreatment problems don't stay small, and they don't wait for a convenient time. Here's what putting it off actually costs.
The truck drops into limp mode and won't pull a loaded deck — so the cars sitting on it aren't going anywhere, and neither are you.
Keep running a clogged DPF or a bad dosing valve and the cheap fix stops being an option — soot bakes in, related parts go with it, and a service job becomes a full component swap.
A code cleared without finding the real cause lights up again on the next haul — usually miles from any shop that can actually help, right back on the shoulder.
If it's throwing an aftertreatment code, derating the truck, or won't finish a regen, it's what we do. Told the way you'd say it, not the way the manual does.
The truck won't complete a regen or keeps trying to — we run a forced regen and find out why it couldn't do it on its own.
Speed's capped, power's gone, and there's a countdown on the dash — we get you out of derate and figure out what tripped it.
Filter's plugged and the pressures are wrong — we clean it, or replace it when it's past cleaning, and tell you honestly which one you're actually looking at.
Dosing valve, DEF pump, DEF head, or a tank heater acting up — the parts most shops have to order, already on our shelf.
"DEF quality" warnings, poor NOx conversion, an SCR that isn't doing its job — traced to the real cause instead of just clearing the light.
Sticking EGR valve, cooler leaking coolant, EGR-related codes — sorted out before they take the rest of the system down with them.
NOx, temperature, and pressure sensors that lie to the ECM and put you in derate for no real reason — found and replaced.
Anybody can clear a code. Getting you out of derate, fixed right, and back under a load the same day is a different thing.
A truck in derate isn't earning — it's parked, and every hour is freight you're not moving. We get most aftertreatment jobs done same day in most cases, next day at the latest.

There's nothing worse than being told the DEF part is on order and you're down three more days. The dosing valves, sensors, and DEF components most shops have to order are already on our shelf.

You've probably had a code cleared that lit right back up on the next haul. We trace the derate to what's actually causing it — diagnosed by someone who ran this equipment — so it doesn't come back.

Aftertreatment work gets technical fast, and being talked past is how you end up paying for the wrong fix. We explain what's wrong and what it'll take in English, Russian, or Spanish.

Aftertreatment is where shops love to sell you a whole new DPF you didn't need. We tell you straight whether it's a cleaning, a sensor, or a real replacement — and charge you for what it actually is.

When a derate strands you mid-corridor, the last thing you need is a long detour to the shop. We're minutes off I-80/94/90 in Burnham, IL

Leaving a loaded hauler somewhere overnight isn't something you do lightly. If we need to keep it, it sits behind our gate, not on the street.

Three steps from a derated truck to back under a load.
Send us what the truck's doing and we'll come back with a straight quote on the aftertreatment work.
Tell us the codes on the dash and we'll get you cleared and back under a load — same day in most cases.
Aftertreatment is where the upsell lives — a whole new DPF when a cleaning would've done it. Operators keep leaving the same note about this shop: "fair and honest, didn't overcharge." When it's a sensor or a cleaning, that's what you'll hear — not a pitch for a system you don't need.
My husband came to this shop today right after his trip, around 4 PM on Friday! , in an urgent situation. They took him in immediately and repaired everything within just an hour — very professional and fast. We were also pleasantly surprised by how reasonable the price was. We’re truly grateful for the professionalism, quick service, and overall great experience. Thank you so much! Highly recommend!
Had an electrical problem on one of our car hauler trailers on a Saturday. The guys at Fleet SC said to stop by so they could take a look, they got the driver rolling again in no time. life savers before the long weekend. They didn't over charge or anything, very fair and honest, helpful guys. Will definitely save them for the future.
Great place , professional mechanics, easy in and out , reasonable prices, bilingual customer service ( English, Russian) the company is reliable in all sectors, customer lounge with coffee and snacks. Enjoyed my experience!
If you're derated on the shoulder or stuck at a lot somewhere on the corridor, you don't have to limp it in — we come to you, same specialists, same DEF parts and sensors on the truck.

Car haulers are the specialty, but this is a full-service truck and trailer shop — so while the aftertreatment work is being done, the brakes, the lights, and the oil change get handled on the same visit instead of at three more shops.
The hub for everything car-hauler — hydraulics, cylinders, bushings, pins, and fifth wheels, all under one roof by the specialists who do it every day.

Deck won't lift, a cylinder weeping, a line that won't hold pressure — the hydraulic work most shops have to order parts for, with ours on the shelf.

A jaw that won't lock, slop in the plate, or a mount that needs setting back where your weight rides right — fifth wheel repair, replacement, and repositioning by the specialists who do it every day.

Starters, alternators, generators, lights, and the wiring that runs the length of a hauler and fails where you can't see it.

Codes read and traced to what's actually causing them, plus OBD and CARB testing when it's time.

Scheduled service on your terms, planned around your loads instead of a breakdown.

Shoes, drums, air systems — semi and trailer both, including the axles under your deck.

Air bags, shocks, ride height, plus the bushings and pins that wear first on hauler equipment.

Cracks, mounts, ramps and decks — fabrication and repair on the parts of a hauler that take the abuse.

Recharge, leaks, compressors — because summer in a truck without it isn't a small problem.


The things operators ask before they bring a derated truck in — answered the way we'd tell you on the phone.
Most of the time, yes — same day in most cases, next day at the latest. We run the forced regen and diagnose why the truck derated so it doesn't just drop back into limp mode on the next haul.
Often it can be cleaned — a clogged filter isn't automatically a failed one. We tell you straight which one you're looking at, because a cleaning and a replacement aren't close in price and you shouldn't pay for the wrong one.
You get the diagnosis and the quote before any work starts, from someone who's run this equipment, so you see exactly what's failing and why. When it's a sensor or a cleaning, that's what you'll be charged for — not a whole new system.
The dosing valves, DEF pumps, DEF heads, and sensors most shops have to order are already on our shelf. That's what makes same-day possible on aftertreatment work instead of days waiting on a part.
It can, until it can't — an aftertreatment code left alone usually ends in a derate, and a derate usually happens miles from a shop at the worst time. Getting it read now is cheaper than getting towed later.
We can, but clearing a code without fixing the cause means it lights right back up — often mid-haul on the shoulder. We'd rather find what tripped it so you're not calling us from the roadside in two days.
Yes — we service aftertreatment systems on most engine makes. Call with your make and we'll tell you straight before you drive out.
Yes — that's handled on our diagnostics and emissions testing side, so if you're due for a compliance test we can take care of it while the truck's here. This page is about getting a derated or code-throwing truck running again.
We come to you — if you're stranded on the corridor, call and we'll bring the same specialists and the DEF parts and sensors out to where you are.
Standalone diagnosis is billed by the hour, but that time isn't charged separately when it leads into the repair. Either way you'll know the number before we start — no surprise on the invoice.
Send us what the truck's doing and we'll come back with a straight quote on the aftertreatment work.
Call and tell us what's on the dash — same day in most cases, next day at the latest.