2001 GMC Sierra 1500 Pickup Owner's Manual - Page 92

If this occurs, repeat the procedure beginning with Step 1. You can exit the program mode any time by turning the ignition to ON (the locks will automatically lock and unlock to indicate you are leaving the program mode). If the lock/unlock switches are not pressed while in the programming mode, the auto lock/unlock setting will not be modified. The following is a list of the available programming options: Lockout Prevention To protect you from locking your key in the vehicle, this feature stops the power door locks from locking when the key is in the ignition and a door is open. If the power lock switch is pressed when a door is open and the key is in the ignition, all of the doors will lock and then the driver's door will unlock. D All doors lock/Only the driver's door unlocks: Press the lock side of the power lock switch on the door panel once and then the unlock side once. This option is unavailable on most vehicles not equipped with keyless entry. of the power lock switch on the door panel once, and then the unlock side twice (this is the factory setting). Child Security Locks (Crew Cabs) (If Equipped) With this feature, you can lock the rear side doors so that they cannot be opened from the inside by passengers. This feature is located on the inside of the rear doors. D All doors lock/All doors unlock: Press the lock side D All doors lock/None of the doors unlock: Press the lock side of the power lock switch on the door panel once, and then the unlock side three times. lock side of the power lock switch on the door panel twice. This turns off the automatic lock feature. D No doors lock/None of the doors unlock: Press the For more information, see your dealer. Move the button forward to engage the security feature. Move the button rearward to return the door locks to normal operation. 2-9