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

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

Is the test light on?

--

Go to Step 9

Go to Step 12

9

Inspect for a poor connection at the washer pump connector.

Was a poor connection found?

--

Go to Step 10

Go to Step 11

10

Repair the poor connection.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

11

Replace the washer pump. Refer to Washer Pump/Reservoir Replacement

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

12

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

Is the test light on?

--

Go to Step 13

Go to Step 16

13

Inspect for a poor connection or open in CKT 227.

Was a poor connection or an open found?

--

Go to Step 15

Go to Step 14

14

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

Is the repair complete?

--

Go to Wiper/Washer System Check

--

15

Repair the poor connection or open in CKT 227.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

16

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

Is the test light on?

--

Go to Step 17

Go to Step 18

17

Repair the poor connection or open in CKT 228.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

18

  1. Backprobe from connector C202, terminal E9, to ground using a test light.
  2. Activate the washer switch.

Is the test light on?

--

Go to Step 19

Go to Step 22

19

Inspect for a poor connection or an open in CKT 94.

Was a poor connection or an open found?

--

Go to Step 20

Go to Step 21

20

Repair the poor connection or the open in CKT 94.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

21

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

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

22

Replace the wiper/washer switch. Multifunction Turn Signal Lever Replacement - On Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--