Diagnostics
Electrical issues, no-start problems, fault code tracing, and hard-to-find drivability concerns — tracked down honestly, not guessed at.
Shelbyville, Indiana · Diesel Repair | Diagnostics | Performance
Sullivan's Diesel Solutions keeps pickups, semis, and working fleets running with dependable repair, honest troubleshooting, and a shop identity that is impossible to miss.
What We Do
Shelby County's one stop shop for all things diesel — heavy duty, light duty, and accessories. Pick a service and send a booking request, or call the shop and we'll get you scheduled.
Electrical issues, no-start problems, fault code tracing, and hard-to-find drivability concerns — tracked down honestly, not guessed at.
Turbo, fuel, cooling, suspension, brake, and general mechanical repair for working diesel vehicles — pickups and semis alike.
Upgrades and diesel solutions aimed at strength, reliability, and clean power delivery — built for trucks that work and trucks that run.
Fleet maintenance support for working trucks that can't sit. Keep your schedule — we'll help you keep the trucks on it.
Semi and heavy truck service from a shop that runs on working-truck business. Straight answers, clear communication, no runaround.
Full service for diesel pickups — Cummins, Power Stroke, and Duramax — from maintenance to major repair, plus roadside support when you're stuck.
Book Service
Tell us what the truck needs. The shop confirms every request by phone before work is scheduled — no surprises, no work started without your go-ahead.
Request received
Keep your request number handy. If you need us sooner, call (463) 218-7515.
Parts Store
Pick your truck first — the categories and part counts below update to what actually fits it. Then browse Cummins, Power Stroke, and Duramax parts, wheels, and lighting, and check out online or pick up at the shop.
Showing parts for all trucks — parts in the case below.
Fitment is matched to the truck you selected. If you're between model years or running a swapped setup, call the shop before ordering and we'll confirm the part fits your truck.
Shop Merch
The black-and-gold identity, on the gear. Shop apparel is made to order — send a request for the item and size you want, and the shop will confirm price and availability when we call you back. No charge until you approve it.
Short-sleeve and long-sleeve shop shirts with the Sullivan's Diesel Solutions mark. Tell us your size and we'll get yours made.
Heavyweight hoodies and cold-weather gear for the shop, the road, and Indiana winters. Made to order in your size.
Fitted caps, snapbacks, and beanies with the shop logo — plus decals, tumblers, and keychains for the truck and the toolbox.
Merch request received
Shop Gallery
Diesel work, trucks, and moments from the road — in the shop, at events, and around the trucks that keep the brand moving.
Why Sullivan's
Sullivan's Diesel Solutions has a rich history of providing top-notch repair services for pickup trucks and semis. Our commitment to quality and customer satisfaction has been unwavering.
From a no-start on a Monday morning to a fleet that has to roll every day, the work gets the same treatment: honest troubleshooting, dependable repair, and clear communication from drop-off to pickup. That's why Shelby County calls us its one stop shop for all things diesel.
Contact
Call or message Sullivan's Diesel Solutions to get your truck scheduled and back on the road.
Call for current hours
Hours can shift around events and fleet work — one quick call confirms we're here when you roll in.
Parts orders ship to the address given at checkout once payment is confirmed. In-stock parts typically leave the shop within 1–2 business days; freight and oversized items (including wheels) may take longer and can carry a freight charge, which the shop confirms with you before the order ships. Local pickup at 44 4th St, Shelbyville, IN is always free — choose pickup at checkout and we'll have it ready at the counter. If an item is back-ordered, we'll call with the expected date before charging your card.
Uninstalled parts in original packaging can be returned within 30 days of purchase with your order number. Electrical components, special-order items, and installed parts are not returnable. Apparel made to order can be exchanged for size if unworn. To start a return, call the shop at (463) 218-7515 with your order number and we'll walk you through it. Service work questions are handled directly with the shop — talk to us first and we'll make it right.
Information you send through this site — service requests, merch requests, and orders — is used only to run your job: confirming appointments, fulfilling orders, and contacting you about your truck or your purchase. We do not sell your information. Payment details entered at checkout are handled by the payment processor and are not stored on this site. Questions about your information: call the shop at (463) 218-7515.
Online orders and service requests are confirmed by the shop before they are final. Prices shown are for the listed part and configuration; if a listing error occurs, the shop will contact you before charging anything. Service estimates are confirmed by phone after the shop can evaluate the vehicle — no repair work begins without customer approval. Fitment shown by the vehicle picker is a guide based on the truck selected; final fitment is confirmed by the shop for every order.