GMC 2007 Envoy - Manual (Page 231)

LOCK FEEDBACK: HORN: The horn will chirp
the second time you press the button with the lock
symbol on the RKE transmitter.
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: LAMPS appears in the display.
To select your preference for the feedback you will
receive when unlocking the vehicle with the Remote
Keyless Entry (RKE) transmitter, press the select
button while UNLOCK FEEDBACK: LAMPS 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 RKE
transmitter.
UNLOCK FEEDBACK: HORN: The horn will
chirp the second time you press the button with the
unlock symbol on the RKE transmitter.
UNLOCK FEEDBACK: BOTH: The parking
lamps will flash each time you press the button
with the unlock symbol on the RKE 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.
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