Saturn AF23/33-5 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).

1. Drive vehicle until ATF operating temperature reaches at least 150oF (65oC).

2. Use your scan tool to reset the transaxle adaptive learns or, disconnect the battery cables, tape them together, and turn the headlight switch and other electrical devices to "Brain Dead" the TCM.

3. Perform the following steps for the Garage Shifts Adaptive Relearn:

a. Apply the brakes.

b. Shift from NEUTRAL to REVERSE and keep it in REVERSE for 3 seconds.

c. Shift from REVERSE to NEUTRAL.

d. Repeat steps "b" and "c" FIVE times.

e. Shift from NEUTRAL to DRIVE and keep it in DRIVE for 3 seconds.

f. Shift from DRIVE to NEUTRAL.

g. Repeat steps "e" and "f" FIVE times.

4. Perform the following steps for Up/DownShifts Adaptive Relearn:

a. Drive the vehicle in DRIVE with light (15-20%) throttle until a speed of 31 mph (50 km/h) in Fourth gear.

b. Decelerate and apply the brakes until the vehicle comes to a stop. Brake the vehicle so that it takes at least 14 seconds to stop.

c. Repeat steps "a" and "b" FIVE times.

d. Drive the vehicle in DRIVE with medium (50-55%) throttle until the vehicle shifts into Fifth gear.

e. Decelerate and apply the brakes until the vehicle comes to a stop. Brake the vehicle slowly so that each downshift occurs.

f. Repeat steps "d" and "e" FIVE times.

5. Perform the following steps for 2-1 Manual Downshift Adaptive Relearn:

a. Drive the vehicle in Intermediate range until over 16 mph (25 km/h) in Second with any throttle position.

b. Decelerate, then shift from Intermediate range to Low range manually and stop the vehicle.

c. Repeat steps "a" and "b" TEN times.

Info: An "adaptive shift relearn procedure" allows the computer to adjust line pressure (using the Linear Solenoids) to achieve the appropriate shift feel & timing. Input & output speed sensors are the computer's 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.

Please return valve body core with all solenoids/Linears.

Thank you.

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