2003 GMC Yukon Owner's Manual - Page 161

Other Warning Devices If you carry reflective triangles, you can use them to warn others. Set one up at the side of the road about 300 feet (100 m) behind your vehicle. The tilt steering wheel lever is located on the lower left side of the column. Horn To sound the horn, press the center pad on the steering wheel. Tilt Wheel If your vehicle is equipped with a tilt wheel, it will allow you to adjust the steering wheel before you drive. You can raise it to the highest level to give your legs more room when you exit and enter your vehicle. To tilt the wheel, hold the steering wheel and pull the lever. Then move the steering wheel to a comfortable position and release the lever to lock the wheel in place. 3-7