GMC Cadillac CTS 2004 Owner's Manual page 216

To change the mode using the Navigation system,
do the following:
1. Enter the Personalization menu following the
instructions listed previously.
2. Scroll to Twilight Delay using the TUNE/SEL knob
to highlight it.
3. Press the TUNE/SEL knob to scroll through the
available delay settings. When the delay time
you want is highlighted, press the TUNE/SEL knob
once to select it.
When the mode is turned on, an X will appear in
the box to the left.
If you choose Mode 1, the exterior lamps will not
illuminate when you exit the vehicle. Only one mode
can be selected at a time.
4. Press the Back multifunction button to exit the
Twilight Delay menu and return to the
Personalization menu.
The mode you selected is now set. You can either exit
the programming mode by following the instructions
later in this section or program the next feature available
on your vehicle.
3-96
Lights Flash at Unlock
This feature turns on the exterior lamps when the
remote keyless entry transmitter is used to unlock the
vehicle. The lamps will remain on for approximately
20 seconds unless a door is opened, the ignition
is turned to ACCESSORY, ON or START or the remote
keyless entry transmitter is used to lock the vehicle.
Programmable Modes
Mode 1: ON
Mode 2: OFF
Before your vehicle was shipped from the factory, it was
programmed to Mode 1. The mode to which the
vehicle was programmed may have been changed since
it left the factory. To program the vehicle to a different
mode, use one of the following procedures:
To change the mode using the Base audio system,
do the following:
1. Enter the personalization portion of the SETUP
menu following the instructions listed previously.
2. Scroll to LIGHTS FLASH AT UNLOCK to highlight it.
3. Press the TUNE/SEL knob to switch back and forth
between on and off.
When the mode is turned on, a check mark will
appear next to the feature name.