GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Inspect fuse F9.

Is fuse F9 open?

Go to Step 2

Go to Step 3

2

  1. Inspect for a short circuit and repair it, if necessary.
  2. Replace the fuse.

Did you find and correct the condition?

--

System OK

--

3

Measure the voltage at fuse F9.

Is the voltage within the specified range?

11-14 V

Go to Step 5

Go to Step 4

4

Repair the open power supply circuit to fuse F16 and F17.

Did you complete the repair?

--

System OK

--

5

  1. Disconnect the wiper motor connector.
  2. Turn the ignition ON.
  3. Turn the wiper switch to HI.
  4. Measure the voltage at the wiper motor connector terminal 5.

Is the voltage within the specified range?

11-14 V

Go to Step 6

Go to Step 7

6

Replace the wiper motor.

Did you complete the replacement?

--

System OK

--

7

  1. The wiper switch is still disconnected.
  2. Turn the ignition ON.
  3. Measure for battery voltage at the wiper switch connector terminal A8.

Is the voltage within the specified range?

11-14 V

Go to Step 9

Go to Step 8

8

Repair the open circuit between the wiper switch connector terminal A8 and fuse F17.

Did you complete the repair?

--

System OK

--

9

  1. The wiper switch is still disconnected.
  2. Turn the wiper switch to HI.
  3. Use an ohmmeter to check for continuity between the wiper switch connector terminal A8 and A9.

Does the ohmmeter indicate the specified value?

0 ohms

Go to Step 11

Go to Step 10

10

Replace the wiper switch.

Did you complete the replacement?

--

System OK

--

11

Repair the open circuit between the wiper switch and the wiper motor.

Did you complete the repair?

--

System OK

--