GM Service Manual Online
For 1990-2009 cars only

Shifting Into Park Automatic Transmission

Caution: It can be dangerous to get out of your vehicle if the shift lever is not fully in PARK (P) with the parking brake firmly set. Your vehicle can roll. Do not leave your vehicle when the engine is running unless you have to. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure your vehicle will not move, even when you are on fairly level ground, always set the parking brake and move the shift lever to PARK (P).

  1. Hold the brake pedal down with your right foot and set the parking brake. See Parking Brake for more information.
  2. Move the shift lever into PARK (P) by pressing the button on the lever while pushing the lever all the way toward the front of the vehicle.
  3. Turn the ignition key to OFF.
  4. Remove the key and take it with you. If you can remove the key from the ignition, the vehicle is in PARK (P).

Leaving Your Vehicle With the Engine Running (Automatic Transmission)

Caution: It can be dangerous to leave the vehicle with the engine running. The vehicle could move suddenly if the shift lever is not fully in P (Park) with the parking brake firmly set. And, if you leave the vehicle with the engine running, it could overheat and even catch fire. You or others could be injured. Do not leave the vehicle with the engine running.

If you have to leave your vehicle with the engine running, be sure your vehicle is in PARK (P) and your parking brake is firmly set before you leave it. After you've moved the shift lever into PARK (P), hold down the regular brake pedal. See if you can move the shift lever away from PARK (P) without first pulling it toward you. If you can, it means that the shift lever wasn't fully locked into PARK (P).

Torque Lock (Automatic Transmission)

If you are parking on a hill and you don't shift your transmission into PARK (P) properly, the weight of the vehicle may put too much force on the parking pawl in the transmission. You may find it difficult to pull the shift lever out of PARK (P). This is called "torque lock." To prevent torque lock, set the parking brake and then shift into PARK (P) properly before you leave the driver's seat. To find out how, see "Shifting Into PARK (P)" listed previously in this section.

When you are ready to drive, move the shift lever out of PARK (P) before you release the parking brake.