GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

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 9

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 10

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 7

Go to Step 6

6

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

Does the test lamp illuminate?

Go to Step 8

Go to Step 11

7

Inspect for a poor connection at the windshield wiper motor connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 12

8

Inspect for a poor connection at the windshield wiper/washer switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 14

Go to Step 13

9

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 14

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10

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 14

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11

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 14

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12

Replace the windshield wiper motor. Refer to Windshield Wiper System Module Replacement .

Did you complete the repair?

Go to Step 14

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13

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

Did you complete the repair?

Go to Step 14

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14

Operate the windshield wiper/washer system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3