GM Service Manual Online
For 1990-2009 cars only

Ignition Lock System Description for Chevrolet Monte Carlo 1999

Due to the column shift lock mechanism, the shift lever will not move under any of the following conditions:

    • The shift lever is in the P position.
    • The ignition switch is locked.

All of the floor shift models use a park lock system. This system uses a flexible cable actuator. The actuator attaches at one end to the shift lever and to the column mounted ignition switch. The actuator actuates a locking pin at the other end. The locking pin engages an ignition switch sliding contact when the shift lever is in one of the following positions:

    • R
    • N
    • D
    • 3
    • 2
    • 1

The ignition switch does not allow the ignition switch slider to move to the Lock position. When the shift lever is in P and the ignition switch is in slider is in LOCK the locking pin engages a cam on the flexible cable. This action prevents the shift lever from moving to another position.