List of Aamco Transmissions Stores in San Marcos, TX Outlet Note Regular Brands Aamco Transmissions Texas San Marcos Rating 4.6 based on 72 votes Official Website http://www.aamco.com/ Products Transmission Services Total Car Care Check Engine Light NameAddressPhone Name/Address/Phone Aamco Transmissions outlet - San Marcos 1206highway 123, San Marcos, Tx78666 (513) 448-1307 Aamco Transmissions outlet - San Marcos 1206 N State Highway 123 (512) 212-1572 Aamco Transmissions outlet - San Marcos 1226 N State Highway 123 (512) 938-1802 People Also Viewed