Automatic Transmission: Notes

For the first time the 3 series will see a six speed Automatic Transmission (GA6HP19Z) with STEPTRONIC.

Fig 1: Identifying Automatic Transmission

Courtesy of BMW OF NORTH AMERICA, INC.

The transmission is similar to that used in the E60 with the M54 engine. In order to utilize this transmission on the E90 changes were made to:

• Outer gearshift mechanism with electrical interlock
• New transmission control module
• Adapted hole circle diameter at the output flange