Colorado Transmission & Diesel Specialists
Specialized Transmission Repair, Automotive & Diesel Service in Fort Lupton, Brighton, Dacono, Firestone, Frederick, and Erie
One-Stop Shop for All Transmission & Diesel Repair Services
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Specializing in heavy-duty and performance transmissions. From precision rebuilds to advanced electronic diagnostics, we ensure your vehicle handles every gear with power and reliability.
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Expert care for Powerstroke, Cummins, and Duramax engines. We handle everything from routine fuel system maintenance to complete engine overhauls and performance tuning.
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Keeping your business on the road with priority service for commercial fleets. We provide comprehensive bumper-to-bumper diagnostics and preventative maintenance schedules.
About the Company
Doug Friedlan and the CTDS team set the standard for transmission repair, diesel performance, and automotive repair across the North Denver Metro. We proudly serve Fort Lupton, Brighton, Erie, and Firestone with certified mechanics who have advanced diagnostic skills, proven repair expertise, and honest service. As a family-owned shop, we deliver dealership-level precision without the inflated cost or impersonal experience. Whether you need a complete transmission rebuild, expert automotive repair, or performance-driven diesel upgrades, we provide dependable solutions built to keep Colorado trucks and daily drivers running at their best. From complete transmission rebuild services to high-performance diesel upgrades, we do the job right and keep Colorado drivers and work trucks on the road.
Get the Right Repair the First Time
When your vehicle needs expert attention, trust CTDS for proven transmission repair, diesel service, and complete automotive repair. Our team diagnoses problems accurately, explains your options clearly, and performs repairs that stop the problem from recurring.