Some jobs shouldn't be done on the shoulder. Our shops give you the lift capacity, heavy machinery, and on-site parts inventory for the big work — engine and drivetrain repair, aftertreatment, full brake overhauls, suspension, and precision PM — in a controlled bay instead of a gravel lot.
All makes and models: over-the-road tractors, vocational trucks, medium-duty box trucks, and commercial trailers. You get a real diagnosis, an honest timeline, and equipment that leaves DOT compliant.
Brand-specific diagnostics for Detroit, Cummins, Paccar, and Volvo — we connect the right laptop, pull both active and inactive codes, and read live data before recommending a single part. From forced DPF regens and SCR/DEF derates to full brake overhauls, suspension, driveline, and precision PM, every bay is staffed by techs who do this every day.
Our shops carry a huge inventory of top-tier medium- and heavy-duty commercial truck and trailer tires, with professional shop mounting, computer balancing, pressure optimization, and flat repairs.
Dedicated trailer bays handle wheel seals, bearings, hub replacements, full brake overhauls, roof patching, side panel replacement, roll-up and swing door repairs, heavy-duty landing gear service, hydraulic liftgates, and reefer refrigeration troubleshooting.
MTG Shops services every major over-the-road and vocational truck brand and the diesel engine platforms that power them. Our techs connect brand-specific diagnostic laptops for Detroit, Cummins, Paccar, and Volvo to pull active and inactive codes, read live data, and find the real fault before recommending parts. From aftertreatment derates and DPF regens to air brakes, electrical, suspension, PM, DOT inspections, and full trailer repair — if it’s on a commercial truck, we work on it.
MTG Shops does not perform engine overhauls or major component rebuilds in-house. Instead, we have quality partners in every market we serve who specialize in overhauls — Detroit, Cummins, Paccar, and Volvo rebuilds, in-frame and out-of-frame. We handle the diagnosis, get the truck to the right specialist, and coordinate the handoff so your downtime stays minimal. You get an honest answer about what we fix and what goes to a trusted partner.
| Feature | What we deliver | The fleet advantage |
|---|---|---|
| Parts on the shelf | Deep stock of the parts that actually strand trucks — brakes, belts, hoses, filters, air components. | Your repair starts today instead of waiting three days on a parts order. |
| Three states, one network | Real bays in Colorado, Texas, and Wyoming — same standards, same crew culture. | Same service wherever your lanes run, and one invoice instead of five vendors. |
| Bays plus mobile trucks | Our shop bays and 24/7 mobile units work off the same dispatch board. | Small stuff is fixed where the truck sits; big jobs go straight to the nearest open bay. |
We don’t guess — we diagnose. Our techs pull the code, read live data, and find the real cause before recommending parts. These knowledge-base articles break down the most common faults we fix in the shop, from DPF and SCR derates to air leaks, foundation brakes, and no-starts. Read the one that matches your truck’s symptom.
MTG Shops is an approved repair provider for Holman fleet vehicles. If you’re a Holman driver or fleet manager, bring your truck to any of our Colorado, Wyoming, or Texas shops for service — from PM and DOT inspections to diagnostics, aftertreatment, and major drivetrain repair. See how Holman fleet service works with MTG Shops.
Get a bay time and a straight estimate.
Four full-service shops in Harlingen, Brush, Green River, and McKinney — each with heavy-duty lift capacity, on-site parts, and the bay time your truck needs. Tap a shop for hours, photos, and directions.
MTG Shops runs 24/7 mobile and shop repair across 18 service areas in three states. Find shop truck & trailer repair in your area:
