GMC 2007 Acadia - Manual (Page 173)

Other Warning Devices
If you carry reflective triangles, you can set them
up at the side of the road about 300 feet (100 m)
behind your vehicle.
Horn
Press near or on the horn symbols on the steering
wheel pad to sound the horn.
Tilt and Telescopic Steering Wheel
A tilt and telescope wheel lets you adjust the
steering wheel before you drive. The steering
wheel can be raised to the highest level to give
your legs more room when you enter and exit the
vehicle.
The lever that lets you tilt and telescope the
steering wheel is located on the left side of the
steering column.
To tilt and telescope the steering wheel, pull down
the lever. Then move the steering wheel up or
down or backward or forward into a comfortable
position. Pull the lever up to lock the steering
wheel in place.
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