GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Body and Accessories 🢒 Wipers/Washer Systems 🢒 Washers Inoperative

Washers Inoperative P32 W/Pulse

Step

Action

Value(s)

Yes

No

1
  1. Turn the ignition switch to the RUN position.
  2. With a test light, probe the wiper/washer body builder provision connector from cavity E to ground.

Refer to Probing Electrical Connectors in Wiring Systems.

Did the test light illuminate?

--

Go to Step 3

Go to Step 2

2

Repair the open in CKT 143 (YEL) between the instrument panel (IP) fuse block cavity G 1 and the wiper/washer body builder provision connector, cavity E.

Is the repair complete?

--

System OK

--

3
  1. Use a J 39200 DMM to backprobe the windshield wiper pulse control module connector, (wire harness side) cavity D to B +. Refer to Using Connector Test Adapters in Wiring Systems.
  2. Measure the voltage.

Is the voltage greater than the specified value?

10.0 volts

Go to Step 5

Go to Step 4

4

Repair the open in CKT 250 (BLK) between the windshield wiper pulse control module connector, cavity D and G 200.

Is the repair complete?

--

System OK

--

5
  1. Use a J 39200 DMM to backprobe the wiper/washer switch pigtail connector, cavity D to B +.
  2. Measure the voltage.

Is the voltage greater than the specified value?

10.0 volts

Go to Step 7

Go to Step 6

6

Replace the windshield wiper pulse control module.

Is the repair complete?

--

System OK

--

7
  1. Use a J 39200 DMM to backprobe the wiper/washer switch pigtail connector, cavity B to B +.
  2. Depress and hold the washer switch.
  3. Measure the voltage.

Is the voltage greater than the specified value?

10.0 volts

Go to Step 9

Go to Step 8

8

Replace the wiper/washer switch. Refer to Windshield Wiper and Washer Switch Assembly - Disassemble - Off Vehicle in Steering Wheel and Column-tilt.

Is the repair complete?

--

System OK

--

9
  1. Use a J 39200 DMM to backprobe the pulse wiper control module connector, cavity B to B +.
  2. Depress and hold the washer switch.
  3. Measure the voltage.

Is the voltage greater than the specified value?

10.0 volts

Go to Step 11

Go to Step 10

10

Replace the windshield wiper pulse control module.

Is the repair complete?

--

System OK

--

11

Repair the open in CKT 94 (PNK) between the windshield wiper pulse control module connector, cavity B and the wiper/washer body builder provision connector.

Is the repair complete?

--

System OK

--