Heavy & Medium Duty Repair

Heavy & Medium Duty Truck Repair in Crystal Spring, PA

Diagnostics and repair on every major heavy and medium duty truck brand. Head gaskets, drivelines, electrical, air systems. We wrench on all of it, right here in Crystal Spring.

We work on: CumminsPowerstrokeDuramaxFreightlinerPeterbiltKenworthMackVolvoInternational

A Real Heavy Duty Shop, Not A Pickup Shop That Dabbles

Medium and heavy duty work is our bread and butter. Cummins ISX, PACCAR, Detroit. We handle it. When a Freightliner limps in with a derate or a Peterbilt starts pushing coolant, you do not want a shop that mostly does oil changes learning on your truck. You want a crew that sees this work every week and has the bays, the tooling, and the experience to turn it around.

Twisted Creek Diesel is based in Crystal Spring, Pennsylvania, and we serve Bedford, Everett, Breezewood, McConnellsburg, and the surrounding area. Trucks come to us from the shop next door and from fleets a county over, because the work holds up and the estimates are straight.

How Do You Diagnose Heavy Duty Trucks?

With the same factory scan tools the dealer uses. That matters more on heavy duty trucks than anywhere else, because guessing at an aftertreatment fault or an electrical gremlin gets expensive fast. We pull the codes, run the tests the factory software calls for, and tell you what is actually wrong before we quote the fix. Dealer level diagnostics without the dealer markup or the three week wait.

What Repairs Do You Handle?

If it is on a working truck, we have probably had it apart. The jobs that come through the door most often:

  • Head gaskets on Cummins ISX, PACCAR, and Detroit engines, done right the first time.
  • Driveline work so power gets to the ground without vibration or noise.
  • Electrical repair, from chasing shorts to sorting out harness and module problems.
  • Air systems, including leaks, valves, and the brake components that keep you legal and safe.
  • Diagnostics and programming with factory scan tools on every major brand.

We treat your rig like it is ours. No BS estimates, no padding the ticket. We tell you what is wrong, what it costs, and what can wait.

Why Does Downtime Matter So Much?

Because a parked truck does not earn. Every truck in our shop belongs to somebody whose livelihood depends on it, and we schedule and work like we understand that. If your truck is broken down on the road instead of in a bay, our roadside repair crew rolls to you. If you run several trucks and want to stop breaking down in the first place, ask about our fleet maintenance programs with scheduled PMs and DOT inspections.

FAQ

Heavy Duty Repair Questions

What heavy duty truck brands do you repair?

Every major one. Freightliner, Peterbilt, Kenworth, Mack, Volvo, and International all come through our bays, along with medium duty trucks from the same families. If it runs on diesel, we can fix it.

Can you diagnose check engine lights and derates?

Yes. We run the same factory scan tools as the dealer, so we can pull codes, run tests, and program modules on Cummins ISX, PACCAR, and Detroit power without the dealer markup or the three week wait.

Do you do head gaskets and driveline work?

We do. Head gaskets, drivelines, electrical, and air systems are the bread and butter of our heavy and medium duty work. Bring the truck in or call the shop and tell us what it is doing.

What if my truck cannot make it to the shop?

Call (814) 421-3395. We run mobile roadside repair for fleets and owner operators across the Crystal Spring area, so if the truck will not move, we roll to you.

Truck Down Or Due For Work?

Call the shop in Crystal Spring. We will get you scheduled and get you rolling.