GM 9T Series Archives - Transmission Digest
Alto introduces molded piston kit for GM 9T50, 9T65

Alto has introduced a three-piece molded piston kit for GM Hydra-Matic 9T50 and 9T65 nine-speed transmissions. The kit (part no. 232670) covers model years 2017 and on. It contains three pistons: the 6-7-8-9 balance piston, the 5-7 reverse apply piston, and the 3-8 apply piston.

Sonnax introduces PR boost valve and o-ringed end plug kits for GM 9T series

Sonnax has introduced drop-in PR boost valve and o-ringed end plug kits for GM 9T45/50/60/65 transmissions. Pressure regulator boost valve kit #184740-02K restores line pressure performance and renews converter feed. Additionally, o-ringed end plug kit #184740-03K, which fits both ETRS and non-ETRS valve bodies, deals with leaks, restores hydraulic integrity and renews shift operations, the