GMC Envoy 2003 Owner's Manual page 120

A second mirror and seating position can be
programmed by repeating the procedure with a second
driver and pressing button 2 for three seconds. Each
time button 1 or 2 is pressed and released while
the vehicle is in PARK (P), a single chime will sound,
and the memory position will be recalled.
If you use the unlock button on the remote keyless entry
transmitter to enter your vehicle, the preset driver's
seat and mirror positions will be recalled if programmed
to do so through the Driver Information Center (DIC).
The numbers on the back of the transmitters,
1 or 2, correspond to the numbers on the memory
controls.
The seat and mirror positions can also be recalled by
placing the key in the ignition if programmed to do
so through the Driver Information Center (DIC).
To stop recall movement of the memory feature at any
time, press one of the power seat controls or memory
buttons.
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Two personalized exit positions can be set by first
recalling the driver's position (by pressing 1 or 2), then
positioning the seat in the desired exit position for
that driver. Press and hold the button with the exit
symbol for three seconds. A double chime will sound to
let you know that the position has been stored. With
the vehicle in PARK (P), the exit position for that driver
can be recalled by pressing the exit button. The
mirrors, power lumbar and recline positions will not be
stored or recalled for the exit positions. If no exit position
is stored, the default is all the way rearward.
Further programming for automatic seat and mirror
movement can be done through the Driver Information
Center (DIC). You may choose to either select or
not select the following:
•
Automatic seat and mirror movement when the
vehicle is unlocked with the remote keyless entry,
•
automatic seat and mirror movement when a key is
placed in the ignition, and
•
automatic seat movement to the exit position when
the vehicle is in PARK (P).