Performance Diesel Transmissions
Transmission Repair — Cheyenne, WY
Stock diesel transmissions were engineered for stock power, and the moment a tuner adds a few hundred foot-pounds, the factory clutches and converter become the weak link — slipping, overheating, and eventually failing, usually while towing. A built transmission solves it: upgraded clutches, billet components where the factory parts break, a converter matched to your power and use, and a valve body that applies it all firmly.
TDC builds and installs performance diesel transmissions matched to the truck's actual mission — a daily-driven tow rig gets a different build than a weekend toy. Paired with proper cooling, a built unit turns the transmission from the thing you baby into the thing you never think about.
What's Included
- Built to hold your actual power and towing load
- Upgraded clutches, billet parts, matched converters
- Valve body work for firm, positive shifts
- Paired with cooling upgrades for hot climates and grades
- Daily-drivability preserved — not a race-only slammer
Transmission Problems, Diagnosed Honestly
- Check the basics first
Fluid level, condition and smell, plus a scan for codes — a surprising number of 'dying transmissions' are none of the above.
- Road test and data
Shift points, slip, flare and hunt get verified on the road with live data watching line pressure and converter behavior.
- Diagnose before teardown
Electrical, hydraulic or mechanical gets determined before anyone talks rebuild money.
- Fix at the right level
Service, targeted repair, replacement or performance build — matched to the truck and your plans for it.
Related Transmission Services
Frequently Asked Questions
How much does performance diesel transmissions cost at TDC Automotive?
Labor is billed hourly at $135/hr, and you'll get findings and an estimate before repair work begins. Call (307) 996-0980 with your year, make and model and Trevor can give you a realistic idea of what's involved.
Do I need an appointment for performance diesel transmissions?
Call ahead at (307) 996-0980 — as an owner-operated shop, TDC schedules work so your vehicle gets Trevor's full attention rather than sitting in a lot for a week.
Where is the shop, and what area do you serve?
The shop is at 8407 Aztec Drive in Cheyenne, Wyoming, and serves all of southeast Wyoming plus the Nebraska panhandle and Northern Colorado — customers regularly drive in from Laramie, Wheatland, Torrington, Pine Bluffs, Wellington, Fort Collins and Greeley.