# Trans Medic Transmissions > Trans Medic Transmissions is a family-run transmission repair shop in Gresham, Oregon (serving the greater Portland metro area) with over 30 years of specialized transmission expertise. The shop provides diagnostics, routine maintenance, leak repair, clutch service, full rebuilds, replacements, performance upgrades, and heavy-duty builds for both automatic and manual transmissions across domestic and foreign vehicles. Trans Medic offers OEM-spec rebuilds and performance upgrades for Ford F-Series, RAM, Chevy Silverado/GMC Sierra, Honda, and Chrysler/Dodge. Trans Medic is located at 2250 NW Birdsdale Ave, Gresham, OR 97030. Hours are Monday through Friday 7:30 AM to 4:30 PM, closed weekends. Phone: (503) 667-8242. The shop accepts all major credit cards (Visa, MasterCard, American Express, Discover), debit cards, and cash. A standard transmission service is typically completed within one business day, while repairs and rebuilds generally require 2 to 5 business days depending on parts availability. Trans Medic provides complimentary multi-point inspections for customers considering repairs or rebuilds, checking fluid condition, leaks, line pressure, and electronic controls. ## Services - [Services Overview](https://www.greshamtransmedic.com/services): Complete list of transmission services including OEM-spec rebuilds, diagnostics, performance upgrades, fleet maintenance, diesel overhauls, converter tuning, and mobile diagnostics - [Transmission Services](https://www.greshamtransmedic.com/services/transmission-services): Routine and preventive maintenance including fluid and filter changes, full diagnostics, manufacturer-recommended inspections, and complimentary multi-point inspections - [Transmission Diagnostics](https://www.greshamtransmedic.com/service/transmission-diagnostics): Precise diagnostics using fluid analysis, pressure testing, and scan-tool readings to detect transmission faults early - [Transmission Replacement & Rebuild](https://www.greshamtransmedic.com/service/transmission-replacement-and-rebuild): Drivetrain restoration with certified technicians who disassemble and reconstruct transmission units using premium components and precision assembly - [Clutch Repair and Replacement](https://www.greshamtransmedic.com/service/clutch-repair-and-replacement): Manual transmission clutch diagnostics, repair, and full replacement services - [Transmission Leak Repair](https://www.greshamtransmedic.com/service/transmission-leak-repair): Professional leak detection and repair including seal and gasket replacement, pressure-testing lines, and premium fluid refill ## Repairs & Rebuilds - [Transmission Repairs & Rebuilds](https://www.greshamtransmedic.com/services/transmission-repairs-rebuilds): Full range from leak repair and diagnostics to automatic overhauls, rebuilds, and full-unit swaps — combining computerized diagnostics with precision tear-down inspections - [Transmission Repair](https://www.greshamtransmedic.com/transmission-repair/): Dedicated transmission repair page covering the shop's approach to diagnosing and resolving transmission problems ## Upgrades & Heavy-Duty - [Transmission Upgrades](https://www.greshamtransmedic.com/services/transmission-upgrades): Performance upgrades including shift kits, valve bodies, torque converters, clutch packs, ECU tuning, and dyno testing - [Performance Transmission Upgrades](https://www.greshamtransmedic.com/service/performance-transmission-upgrades): Detailed overview of performance upgrade options for towing, off-road, and high-performance applications - [Heavy-Duty Transmission Builds](https://www.greshamtransmedic.com/service/heavy-duty-transmission-builds): Rugged heavy-duty builds for towing, commercial, and off-road applications with billet-component upgrades, torque-converter upgrades, and full calibration testing - [Towing & Hauling Transmission Services](https://www.greshamtransmedic.com/service/towing-hauling-transmission-services): Expert towing and hauling transmission diagnostics, maintenance, and repairs for dependable performance under heavy loads ## Vehicle-Specific Solutions - [Vehicle Specific Solutions](https://www.greshamtransmedic.com/services/vehicle-specific-solutions): Factory-spec transmission services tailored to Ford E-Series and F-Series (C4, C6), Dodge/RAM (46RE/46RH, 47RE, 48RE, 66RFE, 68RFE), Chevy Silverado and GMC Sierra (4L60, 4L80, 6L80, 6L90, 8L90, 10L80), Honda Odyssey and Pilot complete overhauls, and Chrysler/Dodge vans ## Fleet Services - [Fleet Transmission Services](https://www.greshamtransmedic.com/services/fleet-transmission-services): Specialty services for Portland's commercial fleets including heavy-duty and diesel transmission repairs, fleet maintenance programs, warranty work, pre-purchase inspections, work-truck rebuilds, and diesel truck overhauls with billet-component and torque-converter upgrades ## FAQ & Support - [Questions (FAQ)](https://www.greshamtransmedic.com/questions): Frequently asked questions covering rebuilt vs. new transmissions, warranty considerations, CVTs, vehicles most likely to need rebuilds, and what to expect from the repair process - [Transmission Repair FAQ](https://www.greshamtransmedic.com/faq-categories/transmission-repair): Detailed FAQ on how transmission repair affects warranties, performance improvements, and certified technician requirements ## Blog - [Blog Home](https://www.greshamtransmedic.com/blog): Transmission repair guides, maintenance tips, warranty advice, and expert insights from the Trans Medic team - [What to Expect at a Transmission Service Center](https://www.greshamtransmedic.com/blog/what-customers-can-anticipate-at-a-transmission-service-center): Guide to what happens when you bring your vehicle to a specialized transmission center - [Transmission Repair Explained](https://www.greshamtransmedic.com/blog/transmission-repair-explained-a-complete-overview): Complete overview of the transmission repair process from diagnosis through completion - [Transmission Repair or Replace](https://www.greshamtransmedic.com/blog/transmission-repair-or-replace-making-the-choice/): Decision guide for choosing between repairing and replacing a transmission - [Transmission Rebuild Guide](https://www.greshamtransmedic.com/blog/mastering-the-art-of-transmission-rebuilds-a-step-by-step-guide): Step-by-step walkthrough of the transmission rebuild process - [Transmission Rebuild Warranties](https://www.greshamtransmedic.com/blog/transmission-rebuild-warranties-what-you-should-expect): Guide to understanding transmission rebuild warranties and what coverage to expect - [Key Factors in Selecting a Repair Shop](https://www.greshamtransmedic.com/blog/key-factors-in-selecting-a-transmission-repair-shop/): What to look for when choosing a transmission repair shop ## Optional - [Car Transmission FAQ](https://www.greshamtransmedic.com/blog/car-transmission-faq): General frequently asked questions about car transmissions, types, and common issues - [How to Choose the Best Transmission Repair Service](https://www.greshamtransmedic.com/blog/how-to-choose-the-best-transmission-repair-service): Comprehensive guide to evaluating and selecting a quality transmission repair provider - [What to Ask Before Committing](https://www.greshamtransmedic.com/blog/what-to-ask-your-transmission-repair-shop-before-committing): Essential questions to ask a transmission repair shop before authorizing work - [Quick Fixes for Transmission Issues](https://www.greshamtransmedic.com/blog/mastering-transmission-issues-quick-fixes/): Expert tips for addressing common transmission problems - [Transmission Rebuilds: Pros, Cons & Tips](https://www.greshamtransmedic.com/blog/transmission-rebuilds-pros-cons-and-what-to-expect): Balanced overview of transmission rebuild advantages, disadvantages, and expectations