About Us

At Wind River Auto & Diesel in Riverton, WY, we understand what it means to rely on your truck every day. Whether you're a business owner running a crew, a contractor managing multiple jobsites, or someone hauling equipment across Wyoming’s backroads, your diesel truck is more than just transportation—it's your livelihood. Our diesel repair shop is here to keep your ride safe, powerful, and performing at its best.

Our diesel truck repair shop is located at 98 2 Valley Rd in Riverton, WY, and proudly serves Riverton, Shoshoni, and the surrounding areas. Since opening in 2010, we’ve focused on what we do best—specializing in domestic diesel trucks. We put our full attention into servicing and upgrading trucks from Chevrolet, Ram, Dodge, Ford, and GM.

Wind River Auto & Diesel’s Beginning

Wind River Auto & Diesel was founded by husband and wife duo, Rick and Cindy Simcox. In 2020, our son Ed joined the family business, bringing new energy and leadership. After Rick’s passing, Ed stepped up to manage the shop full-time, and he’s been at the helm ever since.

We recently expanded our offerings with a premium pre-owned diesel dealership, giving Riverton locals and visitors a place to find high-quality, work-ready trucks. Looking ahead, we’re expanding to serve local fleet owners who require fast turnarounds. 

Diesel-Only Repair Shop in Riverton, WY

Our diesel truck service shop is not your average repair garage. We are a diesel-only operation, which means our team is trained, equipped, and experienced specifically for these engines. From performance upgrades to diagnostics and major repairs, we have tools and technology that other shops simply don’t.

Our ASE-certified technicians utilize the latest diagnostic equipment, specifically designed for the trucks we service. We can take care of anything from a burned-out bulb to a full performance build. And if another shop told you it couldn’t be fixed, we might just be the place that proves them wrong.

Built on T.H.I.N.G.S. That Matter

We operate by a set of core values we call T.H.I.N.G.S. - Trustworthy, Honest, Integrity, Nurturing, Giving,  and Service. It’s how we run our shop, treat our customers, and approach every truck that rolls into our bays. We’re not here to upsell you—we’re here to keep your truck working hard for the long haul.

Our Riverton diesel repair shop proudly offers the following amenities:

• After-hours drop-off
• Scheduled local shuttle service within a 10-mile radius
• Financing options
• Free Wi-Fi in our waiting area

If you're in Riverton or the surrounding area and your light-duty diesel truck needs expert care, trust Wind River Auto & Diesel. We’re your dealership alternative, and your partner in making your truck safe, strong, and fun to drive.