GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer System Check performed?

--

Go to Step 2

Go to Wiper/Washer System Check

2

  1. Turn the ignition switch to RUN.
  2. Turn the wiper switch to LO.
  3. Measure the voltage by backprobing from wiper/washer switch connector terminal E to ground using a DMM.

Is the measurement less than 1.0 V (approx. 0 V)?

1.0 V

Go to Step 3

Go to Step 6

3

Check for a poor connection condition at the wiper/washer switch connector.

Is a poor connection condition present?

--

Go to Step 4

Go to Step 5

4

Repair the poor connection condition at the wiper/washer switch connector.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

5

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement in Steering.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

6

Measure the voltage by backprobing from the wiper/washer switch connector terminal D to ground using a DMM.

Is the measurement less than 1.0 V (approx. 0 V)?

1.0 V

Go to Step 7

Go to Step 10

7

Check for a poor connection condition at the wiper/washer switch connector.

Is a poor connection condition present?

--

Go to Step 8

Go to Step 9

8

Repair the poor connection condition at the wiper/washer switch connector.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

9

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement in Steering.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

10

  1. Disconnect the wiper motor connector.
  2. Measure the voltage from the wiper motor connector terminal D to ground using the DMM.

Is the measurement less than 1.0 V (approx. 0 V)?

1.0 V

Go to Step 11

Go to Step 12

11

Repair the open circuit condition in CKT 113.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

12

Measure the voltage from the wiper motor connector terminal E to ground using the DMM.

Is the measurement less than 1.0 V (approx. 0 V)?

1.0 V

Go to Step 13

Go to Step 14

13

Repair the open circuit condition in CKT 112.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

14

  1. Replace the wiper motor cover. Refer to Wiper Motor Cover Replacement
  2. If the problem is not corrected, replace the wiper motor. Refer to Windshield Wiper Motor Replacement

Is the replacement complete?

--

Go to Wiper/Washer System Check

--