2004 Oldsmobile Silhouette Owner's Manual - Page 167

{CAUTION: In freezing weather, do not use your washer until the windshield is warmed. Otherwise the washer fluid can form ice on the windshield, blocking your vision. Press the wiper symbol on the bottom of the switch to turn on the intermittent wiper. To turn off the wiper, press the top of the switch. To wash and wipe the rear window, press the washer symbol on the top of the switch. Washer fluid will run down the glass as long as the switch is held in. When the top of the switch is released, the wiper will continue to cycle three more times. There is only one washer fluid reservoir for the front and rear windshield wipers. See Windshield Washer Fluid on page 5-37. To wash the rear window when the rear wiper is already on, press the top of the switch with the wash symbol on it. Press in the bottom of the switch to continue the intermittent wiper cycle after the washing cycle is completed. Rear Window Washer/Wiper If your vehicle has a rear window wiper, the switch is located in the instrument panel switchbank. 3-11