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

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

Is the test light on?

--

Go to Step 3

Go to Step 6

3

Check for a poor connection condition to the washer pump.

Is a poor connection condition present?

--

Go to Step 4

Go to Step 5

4

Repair the poor connection condition to the washer pump.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

5

Replace the washer pump. Refer to Washer Pump Replacement

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

6

  1. Connect the test light between the washer pump connector terminal A and ground.
  2. Activate the washer switch.

Is the test light on?

--

Go to Step 7

Go to Step 8

7

Repair the open circuit condition in CKT 1350.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

8

  1. Backprobe from the wiper/washer switch connector terminal B to ground.
  2. Activate the washer switch.

Is the test light on?

--

Go to Step 9

Go to Step 11

9

Check for an open circuit condition in CKT 228.

Is an open circuit condition present?

--

Go to Step 10

Go to Wiper/Washer System Check

10

Repair the open circuit condition in CKT 228.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

11

Check for a poor connection condition at the wiper/washer switch connector terminal B.

Is a poor connection condition present?

--

Go to Step 12

Go to Step  13

12

Repair the poor connection condition at the wiper/washer switch connector terminal B.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

13

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement in Steering.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--