The Colorado Standard in Transmission & Diesel Mastery
Over 60 Years of Precision Engineering
For nearly three decades, Colorado Transmission & Diesel Specialists (CTDS) has served as the North Denver Metro’s premier destination for heavy-duty reliability and technical excellence. Led by Doug Friedlan, our team of ASE-certified mechanics provides a level of mastery usually reserved for specialized racing teams, delivered with the transparency of a local, family-owned shop.
From our home base in Fort Lupton, we proudly serve the surrounding communities of Brighton, Greeley, Firestone, Erie, and the greater North Denver Metro area.
Our Core Specializations
Whether you are managing a commercial fleet or upgrading a personal rig, our certified automotive technicians deliver high-performance solutions tailored to the Colorado terrain:
Transmission Repair & Installation: From precision rebuilds to heavy-duty swaps, we are the region's authority on both automatic and manual systems.
Diesel Performance & Repair: Specialized power upgrades, turbo diagnostics, and fuel system optimization for the most demanding diesel engines.
Advanced Fleet Maintenance: Comprehensive automotive maintenance solutions designed to minimize downtime and maximize vehicle lifespan.
Precision Diagnostics: Using dealership-level technology to find the "unfixable" issues fast, saving you time and money.
Why Colorado Chooses CTDS
If you have been searching for the best, most reliable transmission repair in North Metro Denver, you’ve found it. We understand that when you search for "high-performance diesel upgrades in Fort Lupton" or "auto repair mechanics near Brighton," you aren't just looking for a fix—you're looking for a partner you can trust.
Our Commitment to You:
Transparent Pricing: No hidden fees, just honest, upfront estimates.
Proven Results: Backed by decades of outstanding customer reviews and a reputation for getting it right the first time.
Specialist Expertise: We don't just "fix" trucks; we engineer them for the long haul.