GMC Cadillac CTS 2004 Owner's Manual page 220

Before your vehicle was shipped from the factory, it was
programmed to Mode 2. 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 DRIVER UNLOCK IN PARK 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.
To change the mode using the Navigation system,
do the following:
1. Enter the Personalization menu following the
instructions listed previously.
2. Scroll to Door Lock Options to highlight it.
3. Press the TUNE/SEL knob to view the modes.
4. Scroll to Driver Unlock In Park and press the knob
once to select it.
When the mode is turned on, an X will appear in
the box to the left.
3-100
This feature cannot be selected if Driver Unlock Key
Out/Off, Doors Unlock Key Out/Off or Doors Unlock in
Park is selected. If any of these was previously
selected, you must first de-select it in order to be able
to select Driver Unlock in Park.
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.
Driver Unlock Key Out/Off
This feature allows the driver's door to automatically
unlock when the key is removed from the ignition
on automatic transmission vehicles or when the ignition
is turned to OFF for manual transmission vehicles.
Programmable Modes
Mode 1: ON
Mode 2: OFF