GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the system operation and perform the necessary inspections?

--

Go to Step 2

Go to Symptoms

2

  1. Set the ignition switch to RUN.
  2. Set the wiper switch to OFF.
  3. Disconnect the wiper/washer switch connector.

Does the wiper keep running?

--

Go to Step 5

Go to Step 3

3

Test for a short to voltage in the pigtail wires to the wiper/washer switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 12

Go to Step 4

4

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column - Tilt.

Did you complete the replacement?

--

Go to Step 12

--

5

Measure the voltage from the wiper/washer switch connector (vehicle side), terminal B6, to ground.

Does the voltage measure greater than the specified value?

1.0 V

Go to Step 9

Go to Step 6

6

  1. Reconnect the wiper/washer switch connector.
  2. Disconnect the wiper motor connector.
  3. Measure the voltage from the wiper motor connector, terminal C, to ground.

Does the voltage measure within the specified values?

10.5-15 V

Go to Step 7

Go to Step 8

7

Repair the short to voltage in CKT 92. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 12

--

8

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

Did you complete the replacement?

--

Go to Step 12

--

9

  1. Reconnect the wiper/washer switch connector.
  2. Disconnect the wiper motor connector.
  3. Measure the voltage from the wiper motor connector, terminal D, to ground.

Does the voltage measure greater than the specified value?

1.0 V

Go to Step 11

Go to Step 10

10

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

Did you complete the replacement?

--

Go to Step 12

--

11

Repair the short to voltage in CKT 113. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 12

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12

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 2