Gordy Poad started trucking in 1976( P&P carriers/ P&P grain) driving and wrenching himself and grew his trucking company to the point he needed his own mechanics to keep up the maintenance on his trucks and trailers. In 1990, the shop (GJ's service) started taking on outside work and has not looked back since, taking on any outside work while also still managing Gordy's fleet to this day. Gordy's mechanics also help maintain his farm( Triple P Farm) equipment.
More Than a Repair Shop—We’re a Local Partner
When your truck's down, we know you’re losing more than time. That’s why our team goes above and beyond to deliver accurate diagnostics and top-tier repairs that you can trust. From light-duty pickups to heavy equipment, we handle it all—fleet vehicles, trailers, autos, and everything in between.
We’re proud to work on any make or model that rolls into the shop, with services focused on the essentials that keep you moving:
- Engine and motor repairs
- Brake system repairs and inspections
- Routine and express oil changes
- Advanced computer diagnostics
Every one of our four technicians is fully certified, bringing the right skills to every bay. Whether you’re hauling freight, running a construction crew, or just need your diesel pickup looked at, we’ll treat your vehicle with the care and attention it deserves.
What Makes Us Different
At GJ’s Service, we’re not just another diesel shop—we’re part of the community. Our customers aren’t just clients; they’re neighbors, friends, and fellow business owners. That personal touch is why we’re known for unmatched quality of work and a customer-first mindset.
With four repair bays and a streamlined shop layout, we’re built for efficiency without ever compromising on the details. We listen, we troubleshoot, and we fix it right the first time. And if we see something others might miss, we’ll walk you through it—no surprises, no pressure.
We're also proud to serve a wide 50-mile radius from Lone Rock, including Spring Green, Gotham, Iowa County, Sauk County, and Richland County. We’ve got deep roots in the region and we’re committed to keeping your fleet—or your single truck—ready for whatever’s down the road.
Contact Us Today
Need reliable diesel diagnostics, brake service, or engine work? Give GJ’s Service a call at 608-583-2200. Our doors are open Monday to Friday, 7AM to 5PM, and we’re here to keep your truck on the move.
Diesel Services in Lone Rock, WI
Diesel-powered equipment is built to work hard—and that’s exactly how we treat every service call here at GJ’s Service. From routine maintenance to complex diagnostics and repairs, we provide thorough diesel services designed to keep your truck performing the way it should.
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Don't Take our word for it.
Read Customer Testimonials.
"Awesome crew! Had a tire leaking 1 of the mechanics was waiting for me when I got there and went straight to work on it. If I have a problem in that area again I know right where I'm going."
"Nicest friendliest hard-working bunch of folks I ever met. They got me in and out so fast. Highly recommend coming here if you need anything for your trucking business."
"Awesome shop, I'm from out of town and needed help with a check engine light. They got me in right this morning at opening checked it out for. Thanks for the help guys"
Contact Us
Let us know what is going on with your vehicle, and we will get back to you soon with a quote.