9HP48 Steel Kit Transmission parts, repair guidelines, problems, manuals

Transmission general data

Number of gears Transmission Type Drive Torque (Nm) ATF (full capacity) L ATF (change) L ATF type
9 AT FWD 480 7.5 4 ZF Lifeguardfluid 9
Related transmission models or modifications of this transmission:
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Technical issues and repair guidelines

Rebuilding of a transmission is always made with a repair kit consisting of gaskets and seals (overhaul kit). In this case the filter is replaced as well .Prolonged driving with contaminated oil and worn-out sealing rings leads to rapid wear of solenoids, which operate evenly as a group and also a group fail around the same time period. But it actually requires a long time to have the solenoids fully unconditional.


ATF change is quite difficult and requires experience in automatic transmissions, especially with the 6-speed and 8-speed ZF automatics. Smell of burnt ATF or presence of metal grit of around 1mm is considered to be an indicator for a major overhaul of the automatic transmission even if the gearbox runs flawlessly.