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.
  3. Turn the wiper switch to INT.
  4. Measure the resistance through the wiper/washer switch from switch terminal C to terminal D 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 Lever Replacement - On Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

4

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

Is the measurement within the specified value?

10.5-15 V

Go to Step 7

Go to Step 5

5

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

Is a poor connection or an open present?

--

Go to Step 6

Go to Step 7

6

Repair the poor connection or the open in CKT 112.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

7

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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