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

Does the windshield washer operate properly?

--

Go to Step 3

Go to Washers Inoperative

3

Check the headlamp washer solvent container fluid level.

Is the headlamp washer solvent container empty?

--

Go to Step 4

Go to Step 5

4

Fill the headlamp washer solvent container.

Is the headlamp washer solvent container filled?

--

Go to Wiper/Washer System Check

--

5

Check for an open W/W PMP fuse, HDLP W/W fuse, or LH HDLP fuse in the Underhood Fuse Block.

Was an open fuse found?

--

Go to Step 6

Go to Step 7

6

Replace the open fuse.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

7

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

Are the hoses OK?

--

Go to Step 9

Go to Step 8

8

Repair or replace the washer hoses.

Is the repair or replacement complete?

--

Go to Wiper/Washer System Check

--

9

Check for clogged headlamp washer nozzles.

Are the nozzles clogged?

--

Go to Step 10

Go to Step 11

10

Replace the clogged headlamp washer nozzles.Refer to Headlamp Washer Nozzle Assembly Replacement

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

11

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

Is the test light on?

--

Go to Step 12

Go to Step 15

12

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

Is a poor connection condition present?

--

Go to Step 13

Go to Step 14

13

Repair the poor connection condition.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

14

Replace the headlamp washer pump.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

15

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

Is the test light on?

--

Go to Step 16

Go to Step 17

16

Repair the open circuit condition in circuit 250.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

17

Check for an open circuit condition in circuit 1197.

Is an open circuit condition present?

--

Go to Step 18

Go to Step 19

18

Repair the open circuit condition in circuit 1197.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

19

Check for a poor connection condition or an open circuit condition in circuits 94, 150, 712 and 2440.

Is a poor connection condition or an open cicuit condition present?

--

Go to Step 20

Go to Step 21

20

Repair the poor connection condition or the open circuit condition in circuit 94, 150, 712 or 2440.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

21

Replace the headlamp washer pump relay.

Is the repair complete?

--

Go to Wiper/Washer System Check

--