1

1. Turn the ignition switch ON.
2. Press the washer switch ON for less than 1.0 second.

The washer sprays the windshield and continues to spray for 2-3 seconds after the switch is released. The wipers operate at low speed and continue to run for approximately 6 seconds after the wash cycle is complete, then return to the park position.

2

Set the wiper switch to DELAY (pulse mode).

The wipers make one complete sweep, then pause for 1-25 seconds before making the next sweep. The pause time is adjusted by turning the wiper switch through the delay range.

3

1. Set the wiper switch to DELAY (Pulse mode).
2. Press the washer switch ON for 1-2 seconds.

The washer sprays the windshield as long as the washer switch is held ON. The wipers run at low speed while spraying, and continue for approximately 6 seconds after the washer switch is released. The wipers then return to pulse operation.

4

Set the wiper switch to LO.

The wipers run continuously at low speed.

5

Set the wiper switch to HI.

The wipers run continuously at faster speed.

6

Set the wiper switch to OFF.

The wipers return to the park position at low speed.

7

Set the wiper switch to MIST, then release.

The wipers make one complete sweep, then return to the park position.

Wipers Low Mode Inoperative, High Mode Operates

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

1

1. Turn the ignition switch ON.
2. Hold the washer switch ON for less than 1.0 second.

The washer sprays the windshield and continues to spray for 2-3 seconds after the switch is released. The wipers run at low speed and continue to run for 6 seconds after the wash cycle is complete, then return to the park position.

2

Set the wiper switch to LO.

The wipers run continuously at low speed.

3

Set the wiper switch to HI.

The wipers run continuously at high speed.

4

Set the wiper switch to OFF.

The wipers return to the park position at low speed.

5

Set the wiper switch to MIST and release.

The wipers make one complete sweep at low speed, then return to park position.

6

Set the wiper switch to the minimum sensivity (the position closest to OFF), AUTO DELAY position.

A single wipe should occur.

Wipers Delay Mode Inoperative

7

Set the wiper switch to the next higher sensitivity, AUTO DELAY position. Repeat this step for all sensitivity positions.

A single wipe occurs each time the wiper switch is moved to another automatic position.

Wipers Delay Mode Inoperative

8

Important: 

1. Clean the windshield with GM cleaning powder (P/N 1050011) or equivalent and rinse thoroughly before performing the test. Use paper towels to dry the windshield before performing the test.
2. The windshield wiper blades must be in good condition.
3. Set the wiper switch to the minimum sensitivity (the position closest to OFF) AUTO DELAY position.
4. Spray the rainsense module area of the windshield heavily with water for 5 seconds using a spray bottle or other suitable method.

The wipers run for 15 seconds or less.

The wipers operate continuously for more than 15 seconds. Refer to Wipers Delay Mode Inoperative .

9

1. Dry the windshield using paper towels.
2. Set the wiper switch to the maximum sensitivity (the position closest to LO), AUTO DELAY position.
3. Spray the rainsense module area of the windshield heavily with water for 5 seconds using a spray bottle or other suitable method.

The wipers run continuously (non-pulsed) for 10 seconds or more.

The wipers run in pulse mode within the initial 10 seconds or stop running in 9.0 seconds or less. Refer to Wipers Delay Mode Inoperative .

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