Hi-Tech Transmission's minimum warranty on transmission and drive train repairs is 12 months or 12,000 miles (whichever comes first under normal driving conditions). You will also have the option to upgrade to a 24 month or 24,000 or a 36 month or 36,000 mile warranty for an additional fee. What?s more, as a long time prestigious member of the Automatic Transmission Rebuilder?s Association (ATRA), your vehicles transmission or transfer case can receive service at over 2,000 affiliates across the USA and Canada.