Parking Pawl: Service and Repair

Park Lock Pawl and Actuator Replacement (4L80-E)

Removal Procedure





1. Raise the vehicle. Refer to Vehicle Lifting.
2. Remove the oil pan and filter.
3. Remove the park/neutral position switch.
4. Remove the manual shaft nut and the pin.
5. Remove the detent lever and the actuator assembly.
6. Remove the bolts and the parking pawl bracket.
7. Remove the parking pawl return spring.





8. Use the modified screw extractor in order to remove the plug.
9. Remove the parking pawl shaft retainer, the shaft and the pawl.

Important: If the manual shaft binds in the case during removal, file or sand the shaft in the area adjacent to the detent lever.

10. Remove the manual shaft.
11. Remove the manual shaft seal.

Installation Procedure





1. Install the pawl shaft.
2. Install the parking pawl.
3. Install the plug using a 8 mm or (5/16 inch) rod with Loctite or the equivalent.
4. Install the retainer.





5. Install the pawl return spring.
6. Install the detent lever to the actuator assembly.
7. Install actuator assembly over the parking pawl.
8. Install the manual shaft seal.
9. Lubricate the manual shaft with transmission oil and install the manual shaft into the case.
10. install the nut on the shaft.
11. Install the roll pin.

Notice: Refer to Fastener Notice in Service Precautions.

12. Install the parking lock bracket with the two bolts.
^ Tighten the bolts to 24 Nm (18 ft. lbs.).
13. Install the park/neutral position switch.
14. Install the oil pan and filter.
15. Lower the vehicle.
16. Fill the transmission to the proper level with DEXRON III transmission fluid.