GM Service Manual Online
For 1990-2009 cars only

Windshield Washer Pump Inoperative

Step

Action

Value(s)

Yes

No

DEFINITION: The wiper washer is inoperative when the switch is activated.

1

  1. Disconnect the washer pump connector.
  2. Connect a test light between terminals A and B of the washer pump connector.
  3. Activate the washer pump.

Is the test light ON?

--

Go to Step 2

Go to Step 5

2

Check for the connector at the washer pump for a poor connection.

Is the connection good?

--

Go to Step 4

Go to Step 3

3

Repair the connector at the washer pump.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

4

Replace the washer pump.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

5

Connect a test light between terminal A of the washer pump connector and ground.

Is the test light ON?

--

Go to Step 6

Go to Step 7

6

Repair an open in CKT 150.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

7

Connect a test light between terminal E of connector C209 and ground.

Is the test light ON?

--

Go to Step 8

Go to Step 10

8

Check for an open in CKT 94.

Is there an open present?

--

Go to Step 9

--

9

Repair the open in CKT 94.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

10

Check for a poor connection at terminal E of connector C209.

Is the connection good?

--

Go to Step 12

Go to Step 11

11

Repair the connector at terminal E of connector C209.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

12

Replace the Wiper/Washer Switch.

Is the repair complete?

--

Go to Wiper/Washer System Check

--