The Automatic Transmission Company (ATCO) is located off of the CA-99 Highway at the Grant Line Road exit, just south on Survey Road. While serving the Sacramento area since 1993, ATCO has been located at the Elk Grove location since 2006. ATCO specializes in transmissions, timing belts, AC service, computer diagnostics, and general repairs. ASE Certified technicians are always on duty and offer free transmission diagnostics.