GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer Rear System Check performed?

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Go to Step 2

Go to Wiper/Washer Rear System Check

2

  1. Set the ignition switch to RUN.
  2. Set the rear wiper/washer switch to LO.
  3. Backprobe from the rear wiper/washer switch connector, terminal C, to ground with a test light.

Is the test light on?

--

Go to Step 3

Go to Step 4

3

Backprobe the from rear wiper motor connector, terminal B, to ground with a test light.

Is the test light on?

--

Go to Step 5

Go to Step 6

4

Replace the rear wiper/washer switch. Refer to Windshield Wiper and Washer Switch Replacement .

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

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5

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

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

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6

Repair the poor connection or the high resistance in CKT 391, 393 or the rear window wiper cutout switch.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

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