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 the wiper/washer switch connector C201, terminal E2 to ground, with a DMM.

Is the measurement greater than 1.0 volt?

1.0 volt

Go to Step 6

Go to Step 3

3

Check for a poor connection at connector C201, or for an open circuit condition in the pigtail to the wiper/washer switch assembly.

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

--

Go to Step 5

Go to Step 4

4

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

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

5

Repair the poor connection condition or the open circuit conditon.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

6

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

Is the measurement greater than 1.0 volt?

1.0 volt

Go to Step 8

Go to Step 7

7

Repair the open circuit condition in circuit 113.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

8

Backprobe from the wiper/washer switch connector C201, terminal E3 to ground, with a DMM.

Is the measurement greater than 1.0 volt?

1.0 volt

Go to Step 11

Go to Step 9

9

Check for a poor connection at connector C201, or for an open circuit condition in the pigtail to the wiper/washer switch assembly.

Is a poor connection or open circuit condition present?

--

Go to Step 5

Go to Step 10

10

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

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

11

Measure the voltage from the wiper motor connector, terminal E to ground, with a DMM.

Is the measurement greater than 1.0 volt?

1.0 volt

Go to Step 13

Go to Step 12

12

Repair the open circuit condition in circuit 112.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

13

Replace the wiper motor cover assembly. Refer to Wiper Motor Cover Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--