GMC 1997 Safari Owner's Manual page 115

Mirrors
Outside Mirrors
Inside Daymight Rearview Mirror
Adjust your outside mirrors so you can just see the side
of your vehicle.
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Some mirrors are manually adjustable. The optional
electric mirrors come with a remote control adjustment
switch. Find the switch on the driver's door.
You can adjust the mirror for day or night driving. Press
the tab forward (away from you) for day driving. Pull
the tab back (toward you) for night driving.
To move a mirror, turn the knob in the middle of the
control to L for the driver's side mirror or to R for
the passenger's side mirror. Then press the four-way
pad to move the mirror in the desired direction.