Diesel Truck Repair Services
These are the diesel truck repair services we perform on Ford Powerstroke, Chevy and GMC Duramax and Ram Cummins pickups, from limp mode diagnosis to transmission work. We take on the problems other shops and dealers could not solve, and we test for the cause before anything gets replaced.
Start with what the truck is doing
Pick the symptom closest to yours. The diagnosis still decides the repair.
Fuel pressure, a stuck turbo vane, a plugged DPF or a bad sensor. Clearing the code does not fix what set it.
Usually fuel delivery: an injector, the pump or low supply pressure. On a 7.3 or 6.0 Powerstroke, injector oil pressure too.
Short on air, short on fuel or choking on exhaust. They feel the same from the driver seat, so we measure before anyone orders a turbo.
Watch both gauges. Engine temperature points to cooling; a hot transmission points to the transmission and its cooler.
Slipping, a flashing tow/haul light or a 4x4 that will not engage. These get more expensive the longer they are driven.
Heavy trucks wear steering, suspension and brake parts faster, and a lift changes the geometry too.
Diesel repair services
Engine, fuel, air, exhaust and transmission work. Each page covers symptoms, testing and options.
Diesel diagnostics
Limp mode, check engine lights, smoke, hard starts and the intermittent fault nobody else could catch.
Diesel diagnosticsFuel system repair
Pressure codes, contamination and low power. A failed high-pressure pump sends debris downstream, so we check the whole system.
Diesel fuel system repairInjector repair
Rough idle, a miss and smoke on Ford, GM and Ram engines. We test before we replace, because one bad injector does not always mean a full set.
Diesel injector repairInjection pump repair
P7100 and VP44 on older Cummins, CP3 and CP4 on common-rail engines. Hard starts and pressure codes often point here.
Diesel injection pump repairTurbo repair
No boost, underboost, a new whistle or a VGT that sticks. We find out why it failed before fitting a Garrett or Holset replacement.
Diesel turbo repairEmissions system repair
DPF, EGR, SCR and DEF faults and failed regens. When a DPF plugs, we find out what is feeding it soot, whether that is an injector, the turbo or an EGR fault. We do not do delete work.
Diesel emissions repairTransmission repair
Slipping, overheating and a flashing tow/haul light. We do a lot of transmission work, including the Allison behind most Duramax engines.
Diesel transmission repairPre-purchase inspection
Buying a used diesel? We look it over before you hand over the money.
Diesel pre-purchase inspectionThe same symptom means different things on different engines
A hard start on a 7.3 Powerstroke and a hard start on a 6.7 Cummins share a complaint and almost nothing else. We test with current OEM factory scan tools, so the testing fits the engine in front of us.
- Powerstroke: 6.0 head studs, EGR coolers and oil coolers
- Duramax: LB7 injector failures and the LML's CP4 pump
- Cummins: Holset turbo work and death wobble in the solid front axle
Truck repair services
We handle everything mechanical on a truck except body and paint.
Overheating and cooling
Radiators, coolant leaks and the truck that only runs hot pulling a trailer up a grade.
Truck overheating repairSteering and suspension
Death wobble, loose steering, worn front-end parts and heavy-duty suspension. We find the part that started the shake.
Truck suspension repairLift kit installation
Lift kits and suspension upgrades, set up so the truck still tracks straight and steers right afterward.
Lift kit installation4x4 and transfer case
Four-wheel drive that will not engage, a grinding transfer case, axle trouble and driveline clunks.
4x4 and transfer case repairA/C and heating
No cold air in July or no heat in January. We diagnose the whole climate system.
Truck A/C repairBrakes
Pads, rotors and the heavier brake work a truck that tows and hauls goes through.
Truck brake repairAmerican gas trucks and SUVs
Ford F-150, Chevy Silverado, GMC Sierra, Ram 1500, Tahoe and Suburban, on the same OEM-level equipment. We are not a passenger car shop.
Gas truck and SUV repair
Diagnosis first, then a plan you approve
Call with the symptoms and any codes. Most diagnosis and repair is drop-off, and a typical diagnosis takes 24 to 72 hours depending on workload.
We diagnose the problem you brought in, then evaluate the rest of the truck. You hear what needs attention now and what can wait. No work is done without your approval. The table shows what moves the bill.
| What drives cost | Why it matters |
|---|---|
| Platform and generation | Access differs by engine, so the same repair can take very different labor hours. |
| Root cause or symptom | A pump that sent debris through the injectors makes a bigger job than the pump alone. |
| How long it was driven | Slipping and overheating get worse with every mile. |
| Part choice | OE and upgraded parts cost different amounts, and we explain the tradeoff. |
| Shared teardown | Combining repairs that come apart together saves paying twice for labor. |
What the Front Range does to a truck
Towing and the I-70 grades
West of the shop the road climbs fast. A loaded truck pulling a camper up I-70 runs hot coolant, hot transmission fluid and high exhaust temperatures for miles. A cooling system that is fine around town gets found out on that climb.
Altitude and boost
There is less air at elevation, so the turbo works harder for the same boost. A small leak or a sticky VGT can feel fine in town and fall flat on a pass.
Cold starts
Winter mornings test glow plugs, grid heaters, batteries and fuel that can gel. Newer trucks also heat the DEF system, and a failed heater sets a fault the first cold week.
From owners who brought their trucks in
Word for word from Google, where the shop holds 4.7 stars from 319 reviews.
319 reviews
- Customer
- Brian Rothlisberger
- Business
- Bear Creek Towing LLC
Best place in the Denver metro area for Diesel Truck Repairs. Five Stars everytime! Recently had a bunch of work done and I'm very satisfied with the results. Warranty work is also top notch! Thanks Jeremiah, Mel and the rest of the crew. Appreciate all you do. Brian Rothlisberger, Bear Creek Towing LLC.5 STARS
Tell us what your truck is doing
Send the year, the engine and what you are seeing, and we'll get back to you as quickly as we can.
- Year, make and engine
- What it is doing, and when it started
- Any codes or recent repairs
Rather talk it through? Call (303) 808-1563
What owners ask before they call
Short answers about the services, the process and the drive.
Our diesel services center on Powerstroke, Duramax and Cummins pickups, plus American gas trucks and larger SUVs. We are not the shop for passenger cars, imports, Sprinter vans or small EcoDiesel engines.
Most diagnosis and repair work is drop-off. A typical diagnosis takes 24 to 72 hours depending on workload, and an intermittent problem can take longer because it has to show up before it can be found.
We do not do delete work. We repair DPF, EGR, SCR and DEF systems so they work as designed, and we track down what made them fail in the first place.
For the hard problems, yes. Customers bring difficult Powerstroke, Duramax and Cummins problems to our Golden shop from throughout the Front Range and Colorado mountain communities, often after a local shop could not solve them.
Not sure which service your truck needs?
Call the shop and tell us what your truck is doing, what the codes say and what has already been tried. We will tell you where to start.