GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer System Check performed?

--

Go to Step 2

Go to Wiper/Washer System Check

2

Inspect 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 System Check

--

4

Inspect 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 System Check

--

6

Inspect for clogged windshield washer nozzles.

Are the nozzles clogged?

--

Go to Step 7

Go to Step 8

7

Repair the clogged nozzles.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

8

Inspect for an open wiper/washer fuse.

Is the fuse open?

--

Go to Step 9

Go to Step 10

9

Replace the fuse.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

10

  1. Disconnect the washer pump connector.
  2. Turn the ignition switch 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

Inspect 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 System Check

--

13

Replace the washer pump. Refer to Washer Pump Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

14

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

Is the test light on?

--

Go to Step 15

Go to Step 18

15

Inspect for a poor connection or an open in CKT 227.

Is a poor connection or an open present?

--

Go to Step 16

Go to Step 17

16

Repair the poor connection or the open.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

17

Replace the wiper motor (internal ground circuit open). Refer to Windshield Wiper Motor Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

18

  1. Backprobe the wiper motor connector C1, terminal D, to ground with a test light.
  2. Activate the washer switch while observing the test light.

Is the test light on?

--

Go to Step 19

Go to Step 20

19

Repair the poor connection or the open in CKT 228.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

20

  1. Backprobe the wiper/washer switch connector C201, terminal E13, to ground using a J39200.
  2. Activate the washer switch while observing the J39200

Is the measurement within the specified range?

10.5-15 V

Go to Step 21

Go to Step 24

21

Inspect for a poor connection at connectors C201 and C219, or for an open in CKT 94.

Is a poor connection or an open present?

--

Go to Step 22

Go to Step 23

22

Repair the poor connection or the open.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

23

Replace the wiper motor cover. Refer to Wiper Motor Cover Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

24

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column -Tilt.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--