2005 GMC Sierra 1500 Pickup Owner's Manual - Page 231

Lock Feedback Press the customization button until LOCK FEEDBACK appears in the display. To select your preference for the feedback you receive when locking the vehicle with the remote keyless entry transmitter, press the select button while LOCK FEEDBACK is displayed on the DIC. Pressing the select button will scroll through the following choices: LOCK FEEDBACK: BOTH (default): The parking lamps will flash each time you press the button with the lock symbol on the remote keyless entry transmitter and the horn will chirp the second time you press the lock button. LOCK FEEDBACK: LAMPS: The parking lamps will flash each time you press the button with the lock symbol on the remote keyless entry transmitter. LOCK FEEDBACK: HORN: The horn will chirp the second time you press the button with the lock symbol on the remote keyless entry transmitter. LOCK FEEDBACK: OFF: There will be no feedback when locking the vehicle. Choose one of the available options and press the customization button while it is displayed on the DIC to select it and move on to the next feature. Unlock Feedback Press the customization button until UNLOCK FEEDBACK appears in the display. To select your preference for the feedback you will receive when unlocking the vehicle with the remote keyless entry transmitter, press the select button while UNLOCK FEEDBACK is displayed on the DIC. Pressing the select button will scroll through the following choices: UNLOCK FEEDBACK: LAMPS (default): The parking lamps will flash each time you press the button with the unlock symbol on the remote keyless entry transmitter. UNLOCK FEEDBACK: HORN: The horn will chirp the second time you press the button with the unlock symbol on the remote keyless entry transmitter. UNLOCK FEEDBACK: BOTH: The parking lamps will flash each time you press the button with the unlock symbol on the remote keyless entry transmitter and the horn will chirp the second time you press the unlock button. UNLOCK FEEDBACK: OFF: There will be no feedback when unlocking the vehicle. Choose one of the available options and press the customization button while it is displayed on the DIC to select it and move on to the next feature. 3-65