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 Diagnostic System Check - Wiper/Washer

2

Inspect for an open (blown) wiper fuse.

Is the fuse open (blown)?

--

Go to Step 3

Go to Step 4

3

Replace the wiper fuse.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

4

  1. Set ignition switch to RUN.
  2. Backprobe from the wiper/washer switch connector C203, terminal C to ground, with a test light .

Is the test light on?

--

Go to Step 6

Go to Step 5

5

Repair the open circuit condition or poor connection condition in CKT 243 to the wiper/washer switch.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

6

  1. Set the wiper switch to HI.
  2. Connect the test light from connector C203, terminal D to ground.

Is the test light on?

--

Go to Step 9

Go to Step 7

7

  1. Inspect for a poor connection at connector C203, terminal D.
  2. Inspect for an open circuit condition in the pigtail (CKT 243) to the wiper/washer switch.

Is a poor connection condition or an open circuit condition present?

--

Go to Step 8

Go to Step 16

8

Repair the poor connection condition or the open circuit condition in the pigtail (CKT 243).

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

9

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

Is the test light on?

--

Go to Step 11

Go to Step 10

10

Repair the open circuit condition or the poor connection condition in CKT 92 between connection C203 and the wiper motor.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

11

Connect the test light from the wiper motor connector terminal C to terminal A.

Is the test light on?

--

Go to Step 13

Go to Step 12

12

Repair the open circuit condition or poor connection in ground CKT 1650.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

13

Inspect for a poor connection condition to the wiper motor.

Is a poor connection condition present?

--

Go to Step 15

Go to Step 14

14

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

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

15

Correct the poor connection condition.

Is the poor connection condition corrected?

--

Go to Diagnostic System Check - Wiper/Washer

--

16

Replace the wiper/washer switch.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--