GM Service Manual Online
For 1990-2009 cars only

Shifting Out of Park Automatic Transmission

The vehicle has an electronic shift lock release system. The shift lock release is designed to:

    • Prevent ignition key removal unless the shift lever is in PARK (P) with the shift lever button fully released, and
    • Prevent movement of the shift lever out of PARK (P) unless the ignition is in a position other than LOCK.

The shift lock release is always functional except in the case of a discharged or low voltage (less than 9 volt) battery.

If your vehicle has a discharged battery or a battery with low voltage, try charging or jump starting the battery. See Jump Starting for more information.

If you still cannot move the shift lever from PARK (P), consult your dealer or a professional towing service.