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

Inspect the WIPERS fuse A9 for an open.

Is the fuse open?

--

Go to Step 3

Go to Step 4

3

Replace the WIPERS fuse.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

4

  1. Disconnect the wiper/washer switch connector C202.
  2. Turn ignition switch ON.
  3. Connect a test light from connector C202, terminal E5 to ground.

Is the test light on?

--

Go to Step 16

Go to Step 5

5

Connect a test light from Accessory Relay, terminal A1, to ground.

Is the test light on?

--

Go to Step 6

Go to Step 11

6

Connect a test light from Accessory Relay, terminal A3, to ground.

Is the test light on?

--

Go to Step 7

Go to Step 12

7

Connect a test light from Accessory Relay, terminal B1 to terminal A3.

Is the test light on?

--

Go to Step 8

Go to Step 15

8

Inspect CKT 143 for an open or poor connection between connector C202 and the Accessory Relay.

Was an open or poor connection found?

--

Go to Step 9

Go to Step 10

9

Repair the open or poor connection in CKT 143.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

10

Replace the the Accessory Relay.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

11

Repair the open in CKT 1040 or the power feed circuit to the WIPERS fuse.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

12

Inspect the ACC fuse C13 for an open.

Is the fuse open?

--

Go to Step 13

Go to Step 14

13

Replace the ACC fuse.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

14

Repair the open in CKT 43 or the power feed circuit to the ACC fuse.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

15

Repair the open in CKT 50.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

16

  1. Disconnect the wiper motor connector C2.
  2. Connect the test light from connector C2, terminal C to battery voltage.

Is the test light on?

--

Go to Step 18

Go to Step 17

17

Repair the open in CKT 750.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

18

  1. Reconnect the wiper/washer switch connector C202.
  2. Disconnect the wiper motor connector C1.
  3. Connect the test light from wiper motor connector C1, terminal C, to ground.

Is the test light on?

--

Go to Step 22

Go to Step 19

19

Inspect for an open in CKT 95.

Was an open found?

--

Go to Step 20

Go to Step 21

20

Repair the open in CKT 95.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

21

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

22

  1. Set the wiper switch to LO.
  2. Connect the test light from the wiper motor connector terminal, B, to ground.

Is the test light on?

--

Go to Step 25

Go to Step 23

23

Inspect for an open in CKT 91.

Was an open found?

--

Go to Step 24

Go to Step 21

24

Repair the open in CKT 91.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

25

Inspect for continuity between wiper motor connector C1, terminal A, and connector C2, terminal B, with a J 39200.

Is there continuity?

--

Go to Step 26

Go to Step 29

26

Inspect for a poor connection at wiper motor connector C2, terminal A.

Was a poor connection found?

--

Go to Step 28

Go to Step 27

27

Replace the wiper motor. Refer to Windshield Wiper Motor Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

28

Repair the poor connection.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

29

Inspect for an open in CKT 196.

Was an open found?

--

Go to Step 30

Go to Step 21

30

Repair the open in CKT 196.

Is the repair complete?

--

Go to Wiper/Washer System Check

--