For 1990-2009 cars

Causes | Action
--- | ---
The Selector Lever is not in Position P or N. | Place the Selector Lever in Position N.
The Selector Lever Position Switch/Shift Linkage adjustment is incorrect. | Adjust the Selector Lever Position Switch/Shift Linkage.
The Fluid Pump is blocked. |

1. Remove the Pump.
2. Clean and repair the Pump as necessary.

The Torque Converter is blocked. |

1. Remove the Converter.
2. Repair or replace the Converter as necessary.