Chevrolet Truck & Duramax Repair in Washington, UT
Silverado 1500, 2500HD and 3500HD, Colorado, 6.6L Duramax and Allison transmission service in Washington, Utah.
Silverado owners bring us two kinds of work: diesel maintenance on HD trucks and lifter diagnosis on 5.3L and 6.2L half-tons. Both live in the same shop as the lift and alignment bays. Washington, Utah, a few minutes from St George.
We service trucks, SUVs, Jeeps, Broncos and daily drivers, gas and diesel. If you don't see your vehicle here, call us.
Platforms We Service
Suspension and lift work runs through truck services, diesel work through diesel repair, and ride-height correction through alignment service.
6.6L Duramax Diesel Work
L5P Duramax service runs to the severe-duty schedule for trucks in this climate. Oil to Duramax specification, fuel filter service, coolant, DEF diagnostics, Allison 10-speed fluid, transfer case and both differentials.
The L5P uses a Denso injection pump rather than the CP4 that gave earlier trucks trouble. Injector balance rates, rail pressure and fuel filter condition still tell the story on a high-mileage truck. Water-in-fuel warnings get taken seriously rather than reset.
DPF regeneration cycles cut short by dust and short trips leave soot loading high. We read regen history and soot load with scan data, then service the EGR and intake tract to match what the numbers show.
On the gas side, Active Fuel Management and Dynamic Fuel Management lifter collapse is the most common 5.3L and 6.2L failure we see. Diagnosis runs on compression testing, chassis-ear inspection and live scan data before any teardown.
Lift Shocks and Alignment
Leveling kits, 2 to 6 inch lifts and coilover conversions fit Silverado 1500, 2500HD and Colorado ZR2 platforms. Shock valving gets matched to the weight the truck carries and the terrain it sees.
Alignment follows the install on the Hunter HawkEye Elite. Caster restoration and tie rod geometry are what keep a lifted GM truck from wearing the inside edges off a new set of tires.
Maintenance Intervals
5,000 to 7,500 miles
Oil and filter to Duramax or gas specification, tire rotation, courtesy inspection with photos and video.
15,000 miles
Duramax fuel filter service, engine air filter, cabin filter, DEF quality check, transfer case fluid inspection.
30,000 miles
Allison 10-speed or 8L90 fluid and filter, brake fluid flush, front and rear differential fluid, coolant condition check.
60,000 miles
Driveline fluids replaced, EGR and intake service on diesel, spark plugs on gas V8, front axle service on 4x4.
Tow and dust duty
Air filter and fuel filter checked at every oil service on trucks running dirt roads or towing to Sand Hollow.
These are the intervals a Silverado in Washington County heat and tow duty runs on. Call with your VIN and mileage and we will quote the visit before the work starts.
What We See in Southern Utah
Serving Washington, St George and Hurricane, plus Ivins, Santa Clara, La Verkin and Leeds. Pricing depends on the platform and the mileage, so call for your vehicle.
Book Your Service
Repair, maintenance, lift and alignment in one shop in Washington, Utah.
Side-by-side and truck work happens under one roof in Washington, Utah.
The same shop services Polaris, Can-Am and Kawasaki side-by-sides — shock rebuilds, clutch work and suspension.
Side-by-side and UTV serviceFrequently Asked Questions
Do you service the 6.6L L5P Duramax?
Yes, it is routine work here. That covers oil to Duramax specification, fuel filter service, coolant, DEF system diagnostics, Allison 10-speed fluid, transfer case and both differentials. We work to the severe-duty schedule because heat, dust and towing put most local HD trucks in that column. Call with your mileage for a range on the service you need.
Can you diagnose AFM lifter failure on a 5.3L Silverado?
Yes. Collapsed lifters and camshaft damage from Active Fuel Management are among the most common half-ton failures in this valley. Diagnosis runs on compression testing, chassis-ear listening and live scan data, so the teardown starts with a known cause. You get photos and video of the findings before the repair is quoted.
Does the Allison transmission need fluid service?
Yes. Fluid and filter service in the 30,000 mile range keeps an Allison 10-speed healthy behind a truck that tows in heat. Fluid degrades faster on grades and at weight than the light-duty schedule assumes. Shift complaints get diagnosed with live temperature and pressure data before any fluid goes in.
Do you align a lifted Silverado or Colorado ZR2?
Yes. Post-lift alignment happens on the Hunter HawkEye Elite with caster restored and tie rod geometry set for the new ride height. Trail Boss and ZR2 owners bring us trucks that came back from elsewhere wearing tires unevenly. Bring the truck on the tires you plan to run and you leave with a printout of the numbers.
Ready to Get Started?
Call the shop with your year, mileage and what the truck is doing. We book service in Washington, Utah, minutes from St George.