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 switch to LO.
  3. Turn the windshield wiper switch to HI.
  4. Turn OFF the windshield wiper switch.

Do the windshield wipers park properly?

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

Go to Step 3

3

Do the wipers operate properly in LO?

Go to Step 4

Go to Wipers Inoperative - One or More Modes

4

Replace the park switch. Refer to Wiper Motor Park Switch Replacement .

Did you complete the replacement?

Go to Step 5

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5

  1. Turn ON the ignition, with the engine OFF.
  2. Turn the windshield wiper switch to LO.
  3. Turn the windshield wiper switch to HI.
  4. Turn OFF the windshield wiper switch.

Do the windshield wipers park properly?

Go to Step 7

Go to Step 6

6

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

Did you complete the replacement?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3