Saturn TAAT Relearn Adaptive Shift Procedure

Note:

• Harsh shifts
• Soft shifts
• Flare shifts or spin up shifts, may occur until a relearn procedure is performed (please follow the steps below).

Info: An “adaptive shift relearn procedure” allows the computer to adjust line pressure (using the EPC) to achieve the appropriate shift feel & timing. Input & output speed sensors are the computers inputs or “ears & eyes” for this procedure. Removing a worn valve body, and replacing it with a remanufactured valve body, will often cause drivability complaints such as the ones listed above. This occurs because the computer has in memory the “shift adapts” from the worn valve body that was removed. The computer increases line pressure to compensate for this wear, hence, relearning the computer is a must after a valve body replacement.

1. On all models, start engine and warm engine to normal operating temperature (above 45ºC or 113ºF)

2. Perform 10 sets of upshifts (1-2, 2-3 and 3-4) at about 30 percent throttle.

3. On a DOHC engine, while coasting at 35 MPH, slowly accelerate to ½ throttle to achieve a 4-3 downshift. Place gearshift in “D3” while coasting at 20 MPH, slowly accelerate to ¾ throttle to achieve a 3-2 downshift.

4. Repeat step 3) 5 times. Vehicle relearn adaptive shift procedure is now complete.

5. On a SOHC engine, while coasting at 40 MPH, slowly accelerate to ½ throttle to achieve a 4-3 downshift. Place gearshift in “D3” while coasting at 30 MPH, slowly accelerate to ½ throttle to achieve a 3-2 downshift.

6. Repeat step 5) 5 times. Vehicle relearn adaptive shift procedure is now complete.

Please return valve body core with shift solenoids, EPC Solenoid & TCC solenoid.

Thank you.

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