System Operation Check
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 GMC Yukon XL, 2000 GMC Yukon, 2000 GMC Sierra, 2000 Chevrolet Tahoe, and 2000 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition switch to ACC or RUN position. Hold washer switch on for 1-2 seconds. Wipers should run at low speed. Washer should spray windshield for as long as button is held. After releasing switch, washer should stop and wipers continue to run for about 6 seconds, then return to park position.
- Move wiper switch to DELAY position. Move wiper switch through delay range. Wipers should make one complete sweep, then pause for 1-25 seconds (depending on delay setting) before making next sweep.
- Leave wiper switch in DELAY position. Press and release washer button. Washer should spray windshield for as long as button is held. Wipers should run at low speed for about 6 seconds after button is released, then return to pulse mode.
- Move wiper switch to LOW position. Wipers should operate continuously at low speed. Move wiper switch to HIGH position. Wipers should operate continuously at high speed.
- Move wiper switch to OFF position. Wipers should return to park at low speed. Move wiper switch to MIST position, then release. Wipers should make one complete sweep at low speed, then park. If held in MIST position, wipers should continue to run until switch is released. If wiper system does not function properly, appropriate symptom test. See SYMPTOM INDEX table under SYMPTOM TESTS.