Troubleshooting the automatic transmission is simplified by using the proven method of diagnosis. One of the most important things to remember is that there is a definite procedure to follow. Do not take short cuts or assume that critical checks or adjustments have already been made.

The following procedures are recommended for checking and/or verifying that the various components are adjusted and operating properly. Use Rotunda Automatic Transmission Tester 014-00737 or equivalent. Follow the manufacturer's instructions.

Governor Check

Perform a Shift Point Check as outlined, while on a road test or in the shop. If the shift points are not within specification, proceed with the following governor check:

Accelerate the vehicle to 40 km/h (25 mph), then completely back off the throttle. The transmission should shift to third gear.