Transmission Repair & Replacement Specialists in Carbondale, CO
You rely on your transmission every mile, every shift, every job, and so do we. At JW Diesel & Automotive, our approach to transmission service is rooted in quality, honesty, and real diesel know-how. Whether you’re dealing with rough shifts, delayed engagement, or full-on failure, our team is here to get you back on the road with work-ready performance and peace of mind that lasts.
Power, Control, Performance:
Your Transmission at Work
Your transmission is what turns engine power into forward motion. It controls how your truck accelerates, climbs, tows, and responds on the road. If something’s off, jerky shifts, slipping gears, strange noises, it’s not just annoying, it’s a warning. Ignoring the early signs of transmission trouble can lead to costly damage or complete failure.
At JW Diesel & Automotive, we catch problems early with advanced tools and experience. From automatic to manual systems, we diagnose the issue and explain your options.
Signs You Might Need Transmission Repair
Not sure if it’s time to schedule a visit? Here are a few red flags to watch for:
- Delayed engagement when shifting
- Gear slipping or clunky transitions
- Strange noises like grinding, whining, or humming
- Transmission fluid leaks or low levels
- Burning smells or overheating
- Warning lights on the dash
- Sudden RPM spikes with no increase in speed
If you’re noticing any of these, it’s time to let us take a closer look.
Our Complete Transmission Services
We provide full-service transmission diagnostics, maintenance, and replacement. We service both gas and diesel vehicles with a focus on precision and long-term durability.
Automatic Transmission Repair
Modern automatic transmissions rely on a seamless blend of electronics, hydraulics, and internal components to shift smoothly under pressure. If you’re experiencing slipping, harsh shifts, or delayed engagement, we diagnose the root cause and deliver precise repairs for long-term drivability.
- Fluid flushes & replacements to prevent heat damage
- Sensor & solenoid repairs for accurate shifting
- Valve body service for better fluid control
- Leak detection & gasket/seal replacement
- Shift delay correction for responsive driving
Manual Transmission Repair
Manual transmissions demand mechanical accuracy and experienced hands. If your clutch pedal feels off, gear changes are rough, or you’re hearing grinding sounds, our team inspects every component to return balance and function to your drivetrain.
- Clutch inspection & replacement
- Flywheel resurfacing or replacement
- Shift linkage adjustments
- Gear & synchro repairs
Transmission Replacements
Some transmissions are beyond repair. When that’s the case, we source and install new or remanufactured units that match your vehicle’s exact specifications. Our team handles everything from removal to final calibration to ensure a perfect fit and a smooth return to the road.
- Sourcing of factory-matched units
- Professional installation and calibration
- Full system testing and road validation
Differential Repairs
Your differential plays a critical role in traction, cornering, and power delivery. Whether you hear whining while turning or notice fluid leaks, we inspect and repair differentials with the same level of care and precision we bring to every transmission job.
- Differential fluid service
- Ring & pinion setup and calibration
- Seal, bearing & cover repairs
Transmission Fluid Service
Transmission fluid breaks down under heat and load. We offer fluid flushes, filter changes, and leak checks to keep your transmission protected and shifting smoothly.
Diesel Transmission Services
We specialize in diesel platforms in Duramax, Cummins, and Powerstroke trucks. Whether you’re towing, hauling, or running performance mods, we know what it takes to keep your transmission working hard.
Certified, Transparent, Reliable: That’s the JW Difference
At JW Diesel & Automotive, we know it’s hard to hand over your truck for major work. That’s why we lead with experience, integrity, and the kind of diesel-focused service Carbondale drivers know they can trust.
Certified Diesel Technicians
ASE- and Ford-certified, with advanced training from leaders like Tony Salas and Mike Cleary.
Dealer-Level Tools, No Dealership Hassle
OEM-grade parts and diagnostics, without the pressure or inflated prices.
Fleet-Friendly Drop-Offs
Drop off during business hours, no appointment needed. We’ll get it done fast and right.
Locally Invested
We support local rodeos, schools, hockey teams, and more, because this is our community too.
Warranty-Backed Confidence
All transmission repairs include a 12-month / 12,000-mile warranty.
Backed by Warranty
We stand behind our work with a 12-month / 12,000-mile warranty on parts and labor.
JW Diesel & Automotive
Diesel strong. Fleet ready. Driven to be the best.
Back in Gear, Back on the Road
Transmission trouble only gets worse with time. At JW Diesel & Automotive, we’re here to get you back in gear with repairs that last and service you can trust. Whether you’re shifting heavy loads or just making the daily drive, our team is ready when you are.
Visit us at 794 Industry Place, Carbondale, CO 81623 or give us a call at (970) 510-5157. Prefer to text? Reach out at (970) 510-6344. We serve drivers across Glenwood Springs, New Castle, Eagle, Aspen, Grand Junction, and the Western Slope.
Driven to be the best.
