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 OFF. In addition, the regular brakes must be fully applied before shifting from PARK (P) while the ignition is 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 up into PARK (P) as brake application is maintained. Then move the shift lever into the desired gear.

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

  1. Turn the key to ACC.
  2. Apply and hold the brake until the end of Step 4.
  3. Shift the transaxle to NEUTRAL (N).
  4. Start the vehicle and then shift to the desired transaxle gear.
  5. Have the system fixed as soon as possible.