In-House Diesel Shop
Semi Truck Repair in Rensselaer, IN
Redline Towing & Repair runs a full diesel shop at 9388 IN-114 in Rensselaer — right off I-65 at Exit 215, behind the Burger King and the Fireworks Superstore. Owner-operators and fleets bring us their semis for everything from check-engine diagnostics to DOT inspections to full preventive maintenance.
We're also the folks with the 24/7 mobile service truck, so the shop already knows your truck when it comes in off a roadside call. Call 219-964-2869 for an estimate or to get on the schedule.
Diagnostics Without the Guesswork
Modern trucks talk — you just need the right laptop to listen. We run full computer diagnostics on engine, aftertreatment, transmission, and ABS, then verify the fault instead of throwing parts at codes. Derates, intermittent faults, and “three shops couldn't find it” problems are our normal Tuesday.
You get a straight explanation of what's wrong, what it costs, and what can wait. We fix trucks for people who drive them for a living, so we don't pad tickets.
DOT Inspections and Preventive Maintenance
Staying ahead of the scale house beats paying at it. We do DOT annual inspections and thorough PMs — oil, filters, grease, brake measurements, lighting, air system checks — documented so your compliance file is clean.
Fleets can set PM intervals with us and we'll track them. When a truck's due, we call you — not the other way around.
- DOT annual inspections
- Preventive maintenance (A/B service)
- Brake, air system, and lighting checks
- Aftertreatment and DPF/DEF diagnostics
- Electrical and charging system repair
A Shop That Understands Downtime
A truck in our bay isn't earning. We schedule realistically, communicate daily on longer jobs, and stock common parts so a brake chamber or alternator doesn't mean a three-day wait for a delivery truck.
And when the repair is bigger than a day, our towing side means we can also move your trailer, stage equipment, or get you rolling another way. One company, fewer headaches.
Frequently asked questions
Do you work on all makes?
Yes — we service all major Class 8 makes and engines, plus the trailers behind them. If you've got something unusual, call and ask; we'll tell you straight whether it's in our wheelhouse.
Can you handle aftertreatment and emissions issues?
Yes. DPF, DEF, EGR, and derate diagnostics are a core part of what we do, both in the shop and on the mobile truck.
Do I need an appointment?
Appointments get priority, but breakdowns don't schedule ahead — neither do we. Call 219-964-2869 and we'll fit emergency work in around the schedule.
Do you do DOT inspections?
Yes, full annual DOT inspections with documentation for your compliance files.
Where are you located?
9388 IN-114 in Rensselaer, IN — right off I-65 at Exit 215, behind the Burger King and the Fireworks Superstore. Easy in and out for tractor-trailers.
Related services
Towing & repair near you
Need a tow or truck repair right now?
Call Redline for 24/7 towing, mobile diesel repair, roadside truck service, trailer repair, and in-house shop repair across Northwest Indiana.
Call 219-964-2TOW9388 IN-114, Rensselaer, IN 47978 • 219-964-2869