Semi Truck Repair in Zion, IL
Full-Service Diesel Repair, One Shop
Semi trucks fail in predictable ways: engine performance loss, after-treatment (DPF/SCR/EGR) faults, electrical gremlins, worn suspension components, and brake wear. Our techs work on Class 6-8 trucks across all of these systems, in bays sized for full tractors, at our own paved yard in Zion, IL, just off Route 173 near I-94.
What We Repair
- Diesel engine repair and performance diagnostics
- After-treatment system repair (DPF, SCR, EGR)
- Electrical system and wiring harness repair
- Suspension component repair and replacement
- Brake system service (air and hydraulic)
Our Process
- Diagnose — we identify the root cause, not just the symptom.
- Quote — you get a straight number before any work starts.
- Fix — OEM and OEM-equivalent parts, worked in our own bays.
- Road — back on I-94 with the issue actually resolved.
Built for Drivers Who Can't Afford Downtime
No shared lot or third-party delay — drive straight in.
We find the actual cause before giving you a number.
Repairs built to last, not just pass today.
Most shops punt these jobs elsewhere — we don't.
4.9★ from 350+ Google Reviews
“Blew an air line on I-94, they got the mobile unit out and had me rolling the same day. No upselling, no games, just fixed it right.”
“Cleanest heavy-duty shop I’ve been to in the area. They diagnosed my transmission issue, quoted it straight, and had it done when they said they would.”
“We bring all our DOT inspections here. In and out fast, paperwork done right, and they actually answer the phone.”
Common Questions
How far off I-94 is RT Group?
Do you work on all truck makes?
Can you diagnose a check-engine light or after-treatment fault?
Do I need an appointment?
Can you handle a full fleet inspection or PM cycle?
Explore More Services
Ready When You Are
Call now to talk to a live person, or request a quote and we'll follow up fast.