GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Wiper/Washer System Check?

--

Go to Step 2

Go to Wiper/Washer System Check

2

  1. Turn the ignition switch ON.
  2. Backprobe the combination switch connector with a J 35616-200 unpowered test lamp from cavity 4 to ground.

Did the test lamp light?

--

Go to Step 3

Go to Step 4

3

  1. Backprobe the combination switch connector with a J 35616-200 unpowered test lamp from cavity 16 to ground.
  2. Hold the washer switch in the ON position.

Did the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in the YEL/BLU wire between fuse block 2 and the combination switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

5

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the front washer pump and the combination switch connectors.
  3. Connect a J 39200 Digital Multimeter (DMM) from cavity 16 of the combination switch to cavity 2 of the front washer pump connector.
  4. Measure the resistance.

Is the measured resistance greater than the specified value?

1.0 ohms

Go to Step 7

Go to Step 8

6

Replace the combination switch. Refer to Windshield Wiper and Washer Switch Replacement .

Is the repair complete?

--

Go to Wiper/Washer System Check

--

7

Repair the open in the BLU/BLK wire between the combination switch and the front washer pump. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

8

  1. Connect a J 39200 DMM from the front washer pump connector cavity 1 to ground.
  2. Measure the resistance.

Is the measured resistance greater than the specified value?

1.0 ohms

Go to Step 9

Go to Step 10

9

Repair the open in the BLK ground wire between the combination switch and the front washer pump. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

10

Replace the front washer pump. Refer to Washer Pump Replacement .

Is the repair complete?

--

Go to Wiper/Washer System Check

--