GM Service Manual Online
For 1990-2009 cars only

The vehicle has an automatic transaxle shift lock control system which locks the shift lever in PARK (P) when the ignition is in the OFF position. The regular brakes must be fully applied before the vehicle can be shifted from PARK (P) when the ignition in RUN. See Automatic Transaxle Operation .

If the vehicle cannot be shifted out of PARK (P), ease pressure on the shift lever and push the shift lever all the way into PARK (P) as brake application is maintained. Then, move the shift lever into the desired gear.

If the brake pedal is pressed down but the vehicle still cannot be shifted out of PARK (P), try this:

  1. Turn the ignition key to ACCESSORY. There is no shift interlock in this key position.
  2. Apply and hold the brake until the end of Step 4.
  3. Shift the transaxle to NEUTRAL (N).
  4. Start the engine and then shift to the desired gear.
  5. Have the system fixed as soon as possible.