Will Not Hold In Park

1. Manual linkage improperly adjusted.
2. Parking pawl binding in case.
3. Actuator rod or plunger damaged.
4. Parking pawl damaged.
5. Parking bracket loose or damaged.
6. Detent lever nut loose.
7. Detent lever hole worn or damaged.
8. Detent roller to valve body bolt loose.
9. Detent roller or pin damaged, incorrectly installed or missing.