GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

  1. Turn the ignition ON.
  2. Turn the wiper switch to HI.

Is battery voltage available at wiper motor connector terminal 6?

11-14 V

Go to Step 2

Go to Step 3

2

Replace the wiper motor. Refer to Windshield Wiper Motor Replacement .

Is the repair complete?

--

System OK

--

3

  1. Use an ohmmeter to test the continuity of the wiper switch.
  2. Turn the wiper switch to HI. Check for continuity between the wiper switch terminal 8 and 9.

Is there continuity between terminals 8 and 9?

0 ohms

Go to Step 5

Go to Step 4

4

Replace the wiper switch. Refer to Windshield Wiper and Washer Switch Replacement .

Is the repair complete?

--

System OK

--

5

Repair the open circuit between wiper switch connector terminal 9 and wiper motor connector terminal 6.

Is the repair complete?

--

System OK

--