Honest Auto & Light Duty Diesel Repair in Cheyenne, Wyoming
Honesty & Quality
Owner-operated by Trevor — a skilled, farm-tested mechanic who diagnoses before he replaces, quotes before he wrenches, and stands behind the work. Gas vehicles, and the light-duty diesel pickups that do the real work around here.
A Mechanic You Can Actually Trust
TDC Automotive & Light Duty Diesel is a one-man promise: Honesty & Quality. Every job in the shop follows the correct diagnostic procedure — verify the issue, visually and physically inspect the vehicle, scan for trouble codes, and test to confirm the component is actually failing — before a single part is sold. No parts-cannon guessing, no invented "recommended services," no surprise line items.
The shop works on all major makes of cars, SUVs, vans and trucks, and specializes in light-duty diesel pickups — Cummins, Powerstroke and Duramax — from routine maintenance to injectors, turbos, transmissions, differentials and full performance builds. Meet Trevor, or see exactly what the shop charges.
Services
Diesel Engine Repair
Diesel pickups are what TDC Automotive & Light Duty Diesel is built around — it's in the name.
See Diesel Repair services →Gas Engine Repair
Diesel may be in the name, but TDC Automotive works on gas vehicles every day — cars, SUVs, vans and half-ton pickups from every major manufacturer.
See Gas Engine Repair services →Brake Repair
Brakes are the one system where 'probably fine' isn't good enough — especially on trucks that tow and haul, and on I-80 and I-25 where a loaded stop from highway speed asks everything the system has.
See Brakes services →Suspension & Steering
Between washboard gravel, frost heaves, and truckloads that flirt with the door-jamb sticker, suspension and steering components around here live a hard life.
See Suspension services →Transmission Repair
Transmission trouble makes people fear the worst, but the honest truth is that many 'transmission problems' are fixable for far less than a rebuild — a leak, a solenoid, a fluid service, or an electrical fault.
See Transmission services →Differential Repair
Differential and axle work is a specialty of its own — setting up a ring and pinion takes patience, precision measurement, and experience reading a gear pattern, which is why plenty of general shops won't touch it.
See Differentials services →Auto Electrical Repair
Electrical problems are where honest diagnosis earns its keep.
See Electrical services →Performance Upgrades
Performance work at TDC isn't about dyno-queen numbers — it's about building trucks that tow harder, run cooler, last longer and get out of their own way.
See Upgrades services →Built For The Trucks That Work Out Here
Southeast Wyoming trucks earn their keep — hauling stock, plowing snow, pulling goosenecks over I-80 grades into a 40-mph headwind. TDC specializes in keeping those trucks reliable: CP4 injection pump conversions and disaster prevention kits before the failure, transmission cooling for the tow rigs, grid heater delete kits for the Cummins crowd, and honest diagnostics for everything else.
Serving Wyoming, Nebraska & Colorado
The shop sits at 8407 Aztec Drive, Cheyenne, WY — and customers drive in from three states, because an honest diagnosis is worth the trip.
Southeast Wyoming
Cheyenne, Laramie, Pine Bluffs, Wheatland, Torrington and the farm and ranch country between.
Wyoming service area →Nebraska Panhandle
Bushnell, Lyman, Morrill and Mitchell — closer to Cheyenne than you'd think.
Nebraska service area →Northern Colorado
Wellington, Fort Collins, Greeley, Windsor, Loveland and the northern Front Range.
Colorado service area →Frequently Asked Questions
What does TDC Automotive charge?
Labor is billed at an honest hourly rate: $125/hr for gas vehicles and $135/hr for diesel. You get the diagnosis and an estimate before any repair work starts — call (307) 996-0980 and Trevor will give you a straight answer about your vehicle.
What vehicles do you work on?
All major makes and models of cars, SUVs, vans and trucks — gas and diesel. The shop specializes in light-duty diesel pickups (Cummins, Powerstroke, Duramax) and services Dodge and Ram trucks 2018 and older. See the full list on the Vehicles We Service page.
Do you do diesel performance work?
Yes — turbos, injectors, FASS fuel systems, built transmissions, grid heater deletes, CP3 and DCR injection pump conversions, and more. Builds are matched to how you actually use the truck: towing, daily driving or both.
Where are you located?
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.