GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer Rear System Check performed?

--

Go to Step 2

Go to Wiper/Washer Rear System Check

2

  1. Set ignition switch to RUN.
  2. Backprobe from the rear wiper/washer switch connector, terminal 5, to ground with a test light.

Is the test light on?

--

Go to Step 6

Go to Step 3

3

Check for an open RR WPR/WSHR fuse.

Is the fuse open?

--

Go to Step 4

Go to Step 5

4

Replace the open RR WPR/WSHR fuse.

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

--

5

Repair the open in CKT 393.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

6

    • Set the rear wiper/washer switch to DELAY.
    • Backprobe from the rear wiper/washer switch connector, terminal 6, to ground with a test light.

Is the test light on?

--

Go to Step 10

Go to Step 7

7

Check for a poor connection at the rear wiper/washer switch connector.

Is a poor connection present?

--

Go to Step 8

Go to Step 9

8

Repair the poor connection at the rear wiper/washer switch connector.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

9

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

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

10

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

Is the test light on?

--

Go to Step 12

Go to Step 11

11

Repair the poor connection or open in CKT 391.

s the repair complete?

--

Go to Wiper/Washer Rear System Check

--

12

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

Is the test light on?

--

Go to Step 14

Go to Step 13

13

Repair the poor connection or open in CKT 393.

s the repair complete?

--

Go to Wiper/Washer Rear System Check

--

14

Backprobe from the rear wiper motor connector, terminal A to terminal E, with a test light.

Is the test light on?

--

Go to Step 16

Go to Step 15

15

Repair the poor connection or open in CKT 450.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

16

Check for a poor connection at the rear wiper motor.

Is a poor connection present?

--

Go to Step 18

Go to Step 17

17

Repair the poor connection at the rear wiper motor.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

18

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

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

--