GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

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 using a J 35616-200 .

Is the test light on?

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Go to Step 3

Go to Step 4

3

Backprobe the from rear wiper motor connector, terminal B, to ground using a J 35616-200 .

Is the test light on?

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Go to Step 5

Go to Step 6

4

Replace the rear wiper/washer switch. Refer to Wipers/Washer Switch Replacement - Rear.

Is the replacement complete?

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Go to Step 7

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5

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

Is the replacement complete?

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Go to Step 7

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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?

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Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Symptoms