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AAMCO: Transmission Repair Experts

Call a St. Louis AAMCO Center first if you suspect transmission trouble. For nearly 50 years, AAMCO has been the trusted experts in the diagnosis, service and maintenance of transmissions. With more than 150 different types of transmissions, your car needs more than a mechanic. AAMCO technicians receive ongoing technical training and certifications for top-tier knowledge.

We diagnose your transmission right the first time by starting with an extensive TranScan diagnosis on your transmission - an $85 value available at many centers at no cost!

Plus, we back our transmission repair work with the strongest nationwide warranty in the business – from our basic no-questions-asked nationwide warranty to our available ironclad lifetime warranty! More than half of transmission repairs are minor.

Some common indications that your car needs transmission maintenance or repair are:

Problems or delays when shifting gears Slipping or grinding of Gears or clutch More than a year since last transmission fluid change Clutch pedal not working properly Clicking noise in transmission while in 4-wheel drive Clunking sound from under the vehicle when you change gears

Buzzing sound from transmission Reddish leaking fluid Check engine light on Car jerks while driving Engine “surges”

Discover the difference of an AAMCO Rebuilt Transmission

AAMCO master technicians rebuild your transmission by disassembling and using the original unit. We rebuild transmissions by only replacing what is broken with new OEM-quality or better parts. Then, we thoroughly clean and inspect your transmission's internal and external components, reinstall your transmission, refill the fluid, make any external adjustments and road test to ensure all of the problems you noticed prior to AAMCO's service are corrected.

Have peace of mind knowing your rebuilt transmission meets AAMCO's exacting quality standards, with labor and parts backed with a nationwide warranty.

Transmission Services

It’s no mistake that AAMCO is the world's most recognized transmission expert. Our knowledge of manual and automatic transmission for all cars – foreign and domestic, front- and rear-wheel drive, four-wheel (4x4) drive – is unparalleled in the business. From rebuilding your transmission to resealing your automatic transmission, your St. Louis metro-region AAMCO Center can diagnose and fix your transmission right the first time.