GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Corvette 🢒 Body and Accessories 🢒 Wipers/Washer Systems 🢒 Wiper/Washer System Check

Wiper/Washer System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

* When performing the following checks, maintain some moisture on the front windshield so that the wiper motor does not overheat.

1
  1. Turn the ignition switch to the ON position.
  2. Leave the Wiper Switch in the OFF position.
  3. Depress the washer switch for 2 to 4 seconds and release.
    • Wipers operate at low speed.
    • Washer sprays windshield as long as washer switch is held in the ON position.
    • After releasing switch, washer stops and wipers return to park position after 2 to 4 sweeps.

Washers Inoperative.

2
  1. Move the wiper switch to the INT position.
  2. Rotate the INT ADJ switch from the high to low delay position.
    • Wipers make one complete sweep, then pause before making next sweep.
    • The pause time is adjusted by turning the INT ADJ switch through the delay range.

Wipers-Delay Inoperative.

3
  1. Leave the wiper switch in the INT position.
  2. Depress the washer switch for 2 to 4 seconds and release.
    • Washer sprays windshield as long as washer switch is held in the ON position.
    • Wipers run at low speed while spraying and continue for 2 to 4 sweeps after washer switch is released.
    • Wipers then return to pulse operation.
    • Washers Inoperative.
    • Wipers-Delay Inoperative.

4

Move the wiper switch to the LO position.

Wipers run continuously at low speed.
    • Wipers-Low Inoperative, High Operates.
    • Wipers-All Modes Inoperative.

5

Move the wiper switch to the HI position.

Wipers run continuously at high speed.

Wipers-All Modes Inoperative.

6

Move the wiper switch to the OFF position.

Wipers return to the park position at low speed.
    • Wipers Always ON.
    • Wipers-Blades Do Not Park With Switch in OFF.

7

Move the wiper switch to the MIST position and then release.

Wipers make one complete sweep, then return to the park position.
    • Wipers-Always ON.
    • Wipers-Blades Do Not Park With Switch in OFF.
    • Wipers-All Modes Inoperative.

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.