2003 Hummer H2 Owner's Manual - Page 152

Sunroof (Option) To close the sunroof, press and hold the front side of the button until the sunroof reaches the desired position or until it is fully closed. If you are closing the sunroof completely, be sure to hold the button down until the glass stops moving. To adjust the sunshade, pull it backward or forward to the desired position. Although the sunshade opens automatically when opening the sunroof, it must be manually pulled closed after closing the sunroof. The sunshade can not be opened further than the open position of the sunroof. To open the sunroof and sunshade, press and hold the rear side of the button, located on the overhead console, until the sunroof reaches the desired position or until it stops at the built-in comfort position. The comfort position stops the sunroof from opening completely. To open the sunroof past the comfort position, press and hold the rear side of the button again until the sunroof reaches the desired position or until it stops. This will be the full open position. Vent Position The vent position allows you to open the rear of the sunroof by tilting it upward. To use the vent position, start with the sunroof closed, then press and hold the front side of the button, located on the overhead console, until the sunroof reaches the desired vent position or until it stops moving. To close the sunroof from the vent position, press and hold the rear side of the button until the sunroof reaches the desired position or until it is fully closed. 2-70