GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Wiper/Washer System Check?

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Go to Step 2

Go to Wiper/Washer System Check

2

  1. Set the ignition switch to RUN.
  2. Backprobe from the wiper/washer switch connector C201, terminal E9, to ground with a test lamp.

Does the test lamp illuminate?

--

Go to Step 4

Go to Step 3

3

Repair the open in CKT 243 to the wiper/washer switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 13

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4

  1. Set the wiper switch to HI.
  2. Backprobe from connector C201, terminal E4, to ground with a test lamp.

Does the test lamp illuminate?

--

Go to Step 6

Go to Step 5

5

Inspect for a poor connection at connector C201, terminal E9, or for an open in the pigtail (CKT 243) to the wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 13

Go to Step 12

6

  1. Disconnect the wiper motor connector.
  2. Connect the test lamp from the wiper motor connector terminal C to ground.

Does the test lamp illuminate?

--

Go to Step 8

Go to Step 7

7

Repair the open or the poor connection in CKT 92 between connector C201 and the wiper motor. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 13

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8

Connect the test lamp from the wiper motor connector, terminal C to terminal A.

Does the test lamp illuminate?

--

Go to Step 10

Go to Step 9

9

Repair the open in CKT 1650. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Step 13

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10

Inspect for a poor connection to the wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 13

Go to Step 11

11

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

Did you complete the replacement?

--

Go to Step 13

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12

Replace the wiper/washer switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle

Did you complete the replacement?

--

Go to Step 13

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13

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Wiper/Washer System Check