2002 Buick Rendezvous Owner's Manual - Page 168

Sunroof (Option) If your vehicle has the optional sunroof, the switch is located between the sun visors. NOTICE: Do not open the sunroof if the luggage carrier crossrails are not in the full rear position. This could cause damage to the sunroof glass panel and/or the crossrails. See "Roof Rack System" in the Index for more information. The sunshade must be opened by hand. To vent open the glass panel, press the rear of the switch. Press the switch rearward a second time and release it to express open the glass panel. The glass panel and sunshade will fully open. When the glass panel is express opening, pressing the switch forward will stop it. If you press the switch for more than one and a half seconds, the express open operation will be overridden and the sunroof will operate manually. To close the glass panel, press and hold the front of the switch until the motor stops. The sunroof switch will only work when the ignition is on or when the ignition is off and retained accessory power is active. See "Retained Accessory Power" in the Index for more information. 2-76