GMC Envoy XL 2003 Owner's Manual page 108

Outside Automatic Dimming Mirror
with Curb View Assist
If your vehicle has this feature, the driver's and/or
passenger's outside mirror will adjust to a preset tilt
position while the vehicle is in REVERSE (R) gear.
Curb view assist may be useful when you are parallel
parking. The mirror(s) will return to normal position when
the vehicle is shifted out of REVERSE (R) gear.
Automatic mirror movement in either direction will follow
a short delay.
To first activate this feature, perform the following steps:
1. Press the Personalization button, located on the
steering wheel, until "Tilt Mirror in REVERSE (R)"
is displayed on the DIC display.
2. Press the Select button once to select the
passenger's side mirror, twice for the driver's side
mirror and three times for both mirrors. Then
press the Personalization button repeatedly until the
display goes blank.
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3. With the engine running, engage the parking brake,
press the brake pedal and place the vehicle in
REVERSE (R) gear.
4. Adjust the passenger's side and then the driver's
side outside mirrors to the desired tilt positions.
These positions will be stored into memory once the
vehicle is shifted out of REVERSE (R).
When the vehicle is placed in PARK (P) or in any
forward gear, the mirror(s) will return to normal
driving position, following a short delay.
To change the tilt position, adjust the mirror while the
vehicle is in REVERSE (R) gear with the engine running,
the parking brake engaged and the brake pedal
pressed. The new position will be saved into memory
once the vehicle is shifted out of REVERSE (R).
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