4T60 Automatic Transaxle

Perform road test following sequence given by Tech 1 or other scan tool. MPH shift points will vary with actual throttle position and driver habits.

Shift speed charts have been updated to reference throttle angle or (TPS) data to make measurements more uniform and accurate. A scan tool is necessary to monitor throttle angle.

Shift Speeds:

1. Place-gear selector in Overdrive position. Referring to the shift speed chart, choose a throttle angle of 15 or 20 percent.

2. Set scan tool to monitor throttle angle and vehicle speed.

3. Accelerate to chosen throttle angle and hold throttle steady.

4. As transaxle upshifts, note shift speed for all forward gears.