GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you review the Washer/Wiper operation and perform the necessary inspections?

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Go to Step 2

Go to Diagnostic Starting Point

2

  1. Turn ON the ignition, with the engine OFF.
  2. Using a test lamp backprobe CKT 392 (DK GRN) cavity C at the rear window wiper/washer module connector to ground.
  3. Press the rear window washer switch.

Does the test lamp illuminate?

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Go to Step 3

Go to Step 4

3

Replace the rear window wiper/washer module.

Refer to Liftgate Wiper Motor Replacement .

Did you complete the replacement?

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Go to Step 7

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4

Inspect connector C203 cavity P for damage.

Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Did you find any damage?

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Go to Step 6

Go to Step 5

5

Repair the open in CKT 392 (DK GRN).

Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

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Go to Step 7

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6

Repair or replace the damaged connector C203.

Refer to Connector Repairs in Wiring Systems.

Did you complete the repair?

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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 Step 2