System Operation Check
WARNING: This page is about a different car, the 2002 GMC Savana and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When performing the following checks, maintain some moisture on front windshield so wiper motor does not overheat.
- Turn ignition switch to RUN position. Leave wiper switch in OFF position. Depress washer switch 2-4 seconds and release. Wipers should operate at low speed and washers should spray as long as washer switch is held in ON position. After releasing washer switch, washers should stop and wipers should return to park position after 2-4 sweeps.
- Move wiper switch to DELAY position. Activate delay time by turning wiper switch through delay range. Wipers should make one complete sweep, and then pause for 0-25 seconds before making next sweep.
- Ensure wiper switch is in DELAY position. Hold washer switch on for 1-2 seconds. Washer switch should spray as long as washer switch is held in ON position. Wipers should run at low speed during spray period, continue for 2-4 sweeps after spray cycle, and then return to delay mode.
- Move wiper switch to LOW position. Wipers should run continuously at low speed. Move wiper switch to HIGH position. Wipers should run continuously at high speed.
- Move wiper switch to OFF position. Wipers should return to Park position at low speed. Move wiper switch to MIST position. Wipers should make one complete sweep and return to Park position. If wipers do not function properly, diagnose by symptom. See SYMPTOM INDEX table under SYSTEM TESTS.