GMC 1999 Suburban, Owner'S Manual, Page: 103 / 424

yellow blue
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Electric Tailgate Glass Release
Before operating your electric tailgate glass release, see
the caution under “Your Doors and How They Work” in
this section.
The electric hatch release
button lets you release the
tailgate glass. To release
the glass, press the top of
the button.
Then, lift the window up to open.
The shift lever must be in PARK (P) or NEUTRAL (N)
for the release to work.
There is also a power door lock switch at the rear of the
vehicle which will allow you to lock or unlock all of the
doors. See “Power Doors Locks” in the Index.
Horn
Push on the center of the steering wheel to sound
the horn.
Tilt Wheel (If Equipped)
A tilt steering wheel allows
you to adjust the steering
wheel before you drive.
You can also raise it to the highest level to give your
legs more room when you enter and exit the vehicle.
To tilt the wheel, hold the steering wheel and pull the
lever. Move the steering wheel to a comfortable level,
then release the lever to lock the wheel in place.