2003 GMC Envoy Owner's Manual - Page 79

Programmable Automatic Door Locks Your vehicle is equipped with an automatic IocWunlock feature which enables you to program your vehicle's power door locks. You can program this feature through the Driver Information Center (DIC), or by the following method. To enter the program mode you need to do the following: Programmable Locking Feature The following is the list of available programming options: 1 . Begin with the ignition off. Then pull the turn signal/multifunction lever toward you and hold it there while you perform the next step. 2. Turn the key to RUN and LOCK twice. Then, with the key in LOCK, release theturn signaVmultifunction lever. Once you do this, you will hear the lock switch lock and unlock, the horn will chirp twice, and a 30 second program timer will begin. 3. You are now ready to program the automatic door locks. Select one of the three programming options listed above, and press the lock side of the power door lock switch to cycle through the lock options. You will have 30 seconds to begin programming. If you exceed the 30 second limit, thelocks will automatically lock and unlock andthe horn will chirp twice to indicate that you haveleft the program mode. If this occurs, repeat the procedure beginning with Step 1 to re-enter the programming mode. Mode 1: All doors lock when the transmission is shifted into gear. Mode 2: All doors lock when the vehicle speed is greater than 8 mph (13 km/h). Mode 3: No automatic door locking. The automatic door locks were pre-programmed at the factory to lock all the doors when the transmission is shifted into gear. The following instructions detail how to program your door locks differently than the factory setting. Choose one of the three programming options listed above before entering the program mode. You can exit the program mode anytime by turning the ignition to RUN. The locks will automatically lock and unlock and the horn will chirp twice to indicate that you are leavingthe program mode. If the IocWunlock switches are not pressed while in the programming mode, the current auto IocWunlock setting will not be modified. See your dealer for more information. 2-10