GM 9T Series Archives - Transmission Digest
Alto introduces cartridge filter for GM 9T, Ford 8F series

Alto has launched a new cartridge filter for the GM 9T series and Ford 8F series transmissions. Models covered include: GM 9T45, 9T50, 9T60 and 9T65; and Ford 8F35 and 8F40, model years 2017 and on.

Sonnax adds Zip Kit for GM 9T series

Sonnax has introduced a new Zip Kit for GM 9T45, 9T50, 9T60 and 9T65 transmissions. The company says the kit can recover hydraulic control and restore normal shift operation in these transmissions. The kit has drop-in parts that the company says address root causes of valve body complaints by sealing critical pressure circuits.

TransTec extends coverage for 9T overhaul kits

TransTec has shared that its 9T50 overhaul kit (part no. 49420576) and 9T50 overhaul kit with pistons (part no. 49420637) will now cover the GM 9T65 transmission, model years 2018 and up. Applications affected include:

Shift Pointers: No ball, no reverse

Yoram Levy from Israel gave us a call with a 2022 Chevrolet Traverse using a 9T65 that suddenly lost reverse. He had found a check ball missing in his valve body which he points out in figure 1 (above). Figure 2, below, shows how bad the plate was where this ball passed through. GM usually

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