GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer System Check performed?

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Go to Step 2

Go to Wiper/Washer System Check

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 assembly from connector C211 terminal E4 to terminal E5 with a DMM set to the ohms scale.
  5. Move the wiper switch through the entire delay range, one notch at a time.

Does the resistance vary from approximately 39 Kohms to 680 Kohms?

39 Kohms to 680 Kohms

Go to Step 4

Go to Step 3

3

Replace the wiper/washer switch assembly. Refer to Turn Signal and Multifunction Switch Assembly - Disassemble - Off Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

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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 battery voltage present?

10.5-15 volts

Go to Step 6

Go to Step 5

5

Check for a poor connection condition or an open circuit condition in circuit 112.

Is a poor connection condition or an open circuit condition present?

--

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?

--

Go to Wiper/Washer System Check

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7

Repair the poor connection condition or the open circuit condition in circuit 112.

Is the repair complete?

--

Go to Wiper/Washer System Check

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8

Replace the wiper motor. Refer to Rear Window Wiper Motor Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

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