GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

1

Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Wiper/Washer Systems

2

  1. Turn ON the ignition, with the engine OFF.
  2. Turn the windshield wiper/washer switch through all the switch positions.

Do the windshield wipers operate properly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Disconnect the windshield wiper motor connector.
  2. Connect a test lamp between the accessory voltage circuit and a good ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 7

4

Connect a test lamp between the accessory voltage circuit and the ground circuit of the windshield wiper motor connector.

Does the test lamp illuminate?

Go to Step 5

Go to Step 8

5

  1. Connect a test lamp between the windshield wiper switch on signal circuit and a good ground.
  2. Activate the windshield washer switch.

Does the test lamp illuminate?

Go to Step 10

Go to Step 6

6

  1. Disconnect the windshield wiper/washer switch connector.
  2. Connect a test lamp between the accessory voltage circuit and a good ground.

Does the test lamp illuminate?

Go to Step 11

Go to Step 9

7

Repair the open in the windshield wiper motor accessory voltage circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 12

--

8

Repair the open in the windshield wiper motor ground circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 12

--

9

Repair the open in the windshield wiper/washer switch accessory voltage circuit. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 12

--

10

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

Did you complete the repair?

Go to Step 12

--

11

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

Did you complete the repair?

Go to Step 12

--

12

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3