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

Do the wipers operate at all with the wiper switch in HI?

--

Go to Step 4

Go to Step 3

3

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

4

  1. Turn the ignition switch to RUN.
  2. Turn the wiper switch to HI.
  3. Backprobe from the wiper/washer switch connector, terminal A to ground with a test light.

Is the test light on?

--

Go to Step 8

Go to Step 5

5

Check for a poor connection at the wiper/washer switch connector, or an open in the pigtail to the wiper/washer switch.

Is a poor connection or an open present?

--

Go to Step 7

Go to Step 6

6

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

7

Repair the poor connection or the open in the pigtail to the wiper/washer switch.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

8

  1. Disconnect the wiper motor connector.
  2. Connect a test light from the wiper motor connector, terminal C, to ground.

Is the test light on?

--

Go to Step 10

Go to Step 9

9

Repair the open in CKT 92.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

10

Check for a poor connection to the wiper motor.

Is a poor connection present?

--

Go to Step 11

Go to Step 12

11

Repair the poor connection to the wiper motor.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

12

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

Is the repair complete?

--

Go to Wiper/Washer System Check

--