GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Rear Wiper/Washer System Check performed?

--

Go to Step 2

Go to Wiper/Washer Rear System Check

2

Check the washer solvent container fluid level.

Is the washer solvent container filled?

--

Go to Step 4

Go to Step 3

3

Fill the washer solvent container.

Is the washer solvent container filled?

--

Go to Wiper/Washer Rear System Check

--

4

Check the hoses to ensure that they are correctly attached and that they are not pinched or kinked.

Are the hoses OK?

--

Go to Step 6

Go to Step 5

5

Repair the hoses.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

6

Check for clogged windshield washer nozzle.

Is the nozzle clogged?

--

Go to Step 7

Go to Step 8

7

Replace the clogged nozzle. Refer to Rear Window Washer Nozzle Replacement

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

--

8

Check the RR WPR/WSHR fuse for an open fuse.

Is the fuse open?

--

Go to Step 9

Go to Step 10

9

Replace the open fuse.

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

--

10

  1. Disconnect the washer pump connector.
  2. Turn the ignition switch to ON.
  3. Connect a test light between terminals A and B of washer pump connector (harness side).
  4. Activate the washer switch while observing the test light.

Is the test light on?

--

Go to Step 11

Go to Step 14

11

Check for a poor connection at the washer pump connector.

Is a poor connection present?

--

Go to Step 12

Go to Step 13

12

Repair the poor connection.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

13

Replace the rear washer pump. Refer to Washer Pump Replacement .

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

--

14

  1. Connect the test light between the washer pump connector (harness side), terminal A, and ground.
  2. Activate the washer switch while observing the test light.

Is the test light on?

--

Go to Step 15

Go to Step 16

15

Repair the poor connection or open in CKT 1650.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

16

Check for an open in CKT 392.

Is an open circuit condition present?

--

Go to Step 17

Go to Step 18

17

Repair the open in CKT 392.

Is the repair complete?

--

Go to Wiper/Washer Rear System Check

--

18

Replace the rear wiper/washer switch.

Is the replacement complete?

--

Go to Wiper/Washer Rear System Check

--