GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Place the windshield wiper switch in the OFF position.
  2. Place the ignition switch in the RUN position.
  3. Disconnect the connector at the windshield wiper motor.
  4. Connect a DMM from the windshield wiper motor connector terminal 5 to ground.

Is there continuity?

--

Go to Step 2

Go to Step 5

2

  1. Keep the DMM connected.
  2. Disconnect the multifunction switch connector.

Is there continuity?

--

Go to Step 3

Go to Step 4

3

Repair the short to ground in CKT 459 (BRN/WHT).

Refer to Wiring Repairs .

Is the repair complete?

--

System OK

--

4

Replace the multifunction switch.

Refer to Windshield Wiper and Washer Switch Replacement .

Is the repair complete?

--

System OK

--

5

Connect a DMM from the windshield wiper motor connector terminal 4 to ground.

Is there continuity?

--

Go to Step 6

Go to Step 9

6

  1. Keep the DMM connected.
  2. Disconnect the multifunction switch connector.

Is there continuity?

--

Go to Step 7

Go to Step 8

7

Repair the short to ground in CKT 458 (BRN/YEL).

Refer to Wiring Repairs .

Is the repair complete?

--

System OK

--

8

Replace the multifunction switch.

Refer to Windshield Wiper and Washer Switch Replacement .

Is the repair complete?

--

System OK

--

9

Connect a DMM from the windshield wiper motor connector terminal 2 to ground.

Is there continuity?

--

Go to Step 11

Go to Step 10

10

Replace the windshield wiper motor.

Refer to Windshield Wiper Motor Replacement .

Is the repair complete?

--

System OK

--

11

  1. Keep the DMM connected.
  2. Disconnect the multifunction switch connector.

Is there continuity?

--

Go to Step 12

Go to Step 13

12

Repair the short to ground in CKT 457 (BLU/WHT).

Refer to Wiring Repairs .

Is the repair complete?

--

System OK

--

13

Replace the multifunction switch.

Refer to Windshield Wiper and Washer Switch Replacement

Is the repair complete?

--

System OK

--