GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

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

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Go to Step 2

Go to Symptoms

2

  1. Turn the ignition to OFF.
  2. Disconnect wiper/washer switch connector C211.
  3. Turn the wiper switch to DELAY.
  4. Measure the resistance through the wiper/washer switch from connector C211, terminal E4 to terminal E5, using a J 39200 set to the ohms scale.
  5. Move the wiper switch through the entire delay range, one notch at a time.

Does the resistance vary within the specified range?

39 Kohms to 680 Kohms

Go to Step 4

Go to Step 3

3

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

Is the replacement complete?

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Go to Step 9

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4

  1. Reconnect the wiper/washer switch connector C211.
  2. Disconnect the wiper motor connector.
  3. Turn the ignition switch to RUN.
  4. Turn the wiper switch to DELAY.
  5. Measure the voltage from the wiper motor connector, terminal E, to ground.

Is the measurement within the specified values?

10.5-15 V

Go to Step 6

Go to Step 5

5

Check for a poor connection or an open in CKT 112.

Is a poor connection or an open present?

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Go to Step 7

Go to Step 8

6

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

Is the replacement complete?

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Go to Step 9

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7

Repair the poor connection or the open in CKT 112.

Is the repair complete?

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Go to Step 9

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8

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

Is the replacement complete?

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Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Symptoms