Parking Pawl: Service and Repair
Park System
Removal
All vehicles
1. With the vehicle in PARK, position it on a hoist.
2. Remove the driveshaft.
3. Remove the transmission insulator and retainer fasteners.
1. Remove the transmission insulator and retainer nuts.
2. Remove the transmission insulator and retainer bolts.
4. Using a suitable high-lift transmission jack, remove the transmission insulator and retainer.
1. Raise the transmission off the transmission insulator and retainer.
2. Remove the transmission insulator and retainer.
5. Disconnect the Output Shaft Speed (OSS) sensor connector.
Vehicles equipped with a fixed flange transmission
6. Remove the output shaft flange.
1. Remove and discard the output shaft flange bolt.
2. Remove the output shaft flange.
7. Using the Output Shaft Locknut Socket, remove and discard the output shaft retaining nut.
8. Remove the 9 extension housing-to-case bolts and the transmission extension housing.
Vehicles equipped with a slip yoke transmission
9. Remove the 9 extension housing-to-case bolts and the transmission extension housing.
All vehicles
10. Remove and discard the extension housing gasket.
11. Remove the parking rod guide plate-to-case bolts and parking rod guide plate.
12. Remove the park pawl components.
1. Remove the park pawl return spring.
2. Remove the park pawl.
3. Remove the park pawl shaft.
13. Inspect the output shaft and park gear for damage.
1. Inspect the park gear for damage.
2. Inspect the OSS (Output Shaft Speed) gear for damage.
14. If damage is found to either the OSS (Output Shaft Speed) or park gears, remove the park gear and output shaft as an assembly.
15. NOTE: The park gear and OSS (Output Shaft Speed) gear may be present on the output shaft.
Remove the park and OSS (Output Shaft Speed) gear from the output shaft.
16. NOTE: Thrust washer shown, bearing similar.
Remove the output shaft bearing on slip yoke models or the thrust washer on fixed flange models.
17. Inspect the Teflon(R) seals in the rear of the case. If the seals are worn or damaged, install new scarf cut seals.
Installation
All vehicles
1. NOTE: Thrust washer shown, bearing similar.
NOTE: Lightly lubricate the thrust washer or bearing with petroleum jelly to hold it in place during assembly.
Install the output shaft bearing on slip yoke models or the thrust washer on fixed flange models.
2. NOTICE: Be careful when installing the output shaft not to damage the seals.
If the output shaft was removed, install the output shaft and park gear assembly.
3. Install the park pawl shaft.
1. Install the park pawl shaft.
2. Install the park pawl.
3. Install the park pawl return spring.
4. Install the park rod guide plate.
1. Install the park rod guide plate.
2. Install the parking rod guide plate-to-case bolts.
- Tighten to 25 Nm (18 lb-ft).
5. NOTE: Lightly lubricate the gasket with petroleum jelly to hold it in place during assembly.
Install the new extension housing gasket.
Vehicles equipped with a slip yoke transmission
6. Install the extension housing and the 9 transmission extension housing-to-case bolts.
- Tighten to 47 Nm (35 lb-ft).
Vehicles equipped with a fixed flange transmission
7. Install the extension housing and the 9 transmission extension housing-to-case bolts.
- Tighten to 47 Nm (35 lb-ft).
8. Inspect the new output shaft nut O-ring for cuts. If cut, install a new output shaft nut.
9. Using the Output Shaft Locknut Socket, install a new output shaft retaining nut.
- Tighten to 200 Nm (148 lb-ft).
10. Install the output shaft flange and a new output shaft flange bolt.
- Tighten to 130 Nm (96 lb-ft).
All vehicles
11. Connect the OSS (Output Shaft Speed) sensor connector.
12. Install the transmission insulator and retainer.
1. Position the transmission insulator and retainer.
2. Lower the transmission onto the transmission insulator and retainer.
13. NOTE: It may be necessary to raise the back of the transmission slightly in order to install the bolts.
Loosely install the transmission insulator and retainer bolts.
14. Loosely install the transmission insulator and retainer nuts.
15. Tighten the transmission insulator and retainer bolts and nuts to 90 Nm (66 lb-ft).
16. Install the driveshaft.
17. Start the engine. Move the selector lever through all the gear ranges, checking for engagements.
18. NOTICE: The use of any other transmission fluid than specified can result in the transmission failing to operate in a normal manner or transmission failure.
Using the scan tool with the engine running, check and make sure the transmission is at normal operating temperature 66-77°C (150-170°F). Check and adjust the transmission fluid level and check for any leaks. If transmission fluid is needed, add transmission fluid in increments of 0.24L (0.5 pt) until the correct level is achieved.