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 C201.
  3. Set the wiper switch to DELAY.
  4. Measure the resistance through the wiper/washer switch from connector C201, terminal E9 to terminal E3, 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 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 .

Is the replacement complete?

--

Go to Wiper/Washer System Check

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4

  1. Reconnect the wiper/washer switch connector C201.
  2. Disconnect the wiper motor connector.
  3. Turn the ignition switch to RUN.
  4. Set the wiper switch to DELAY.
  5. Measure the voltage from the wiper motor connector terminal E to ground.

Is the voltage measured within the specified range?

10.5-15 V

Go to Step 6

Go to Step 5

5

Repair the poor connection or the open in CKT 112.

Is the repair complete?

--

Go to Wiper/Washer System Check

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6

Replace the wiper motor cover. Refer to Wiper Motor Cover Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

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