Washers Inoperative
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Washers Inoperative
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Wiper/Washer System Schematics Connector End View Reference: Wiper/Washer System Connector End Views DEFINITION: The windshield washer pump is inoperative. |
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| 1 | Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections? | - | Go to Step 2 | Go to Symptoms - Wiper/Washer Systems |
| 2 |
|
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Do the windshield washer wipers operate when the windshield washer switch is pressed? | - | Go to Step 6 | Go to Step 4 |
| 4 |
|
0.5 Ω | Go to Step 15 | Go to Step 5 |
| 5 | Test the following circuits for open or high resistance.
Refer to Circuit Testing and to Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 13 |
| 6 |
|
- | Go to Step 7 | Go to Step 9 |
| 7 |
|
- | Go to Step 8 | Go to Step 10 |
| 8 |
|
- | Go to Step 18 | Go to Step 11 |
| 9 | Replace the underhood fuse block. Refer to Underhood Electrical Center or Junction Block Replacement
in Wiring Systems. Did you complete the replacement? |
- | Go to Step 20 | - |
| 10 | Test the windshield washer relay control circuit for an open or high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 15 |
| 11 | Test the windshield washer pump control circuit for an open or high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 12 |
| 12 | Test the windshield washer pump ground circuit for an open or high resistance. Refer to Circuit Testing
and to Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 17 |
| 13 | Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 14 |
| 14 | Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal Switch Replacement
in Steering Wheel and Column. Did you complete the replacement? |
- | Go to Step 20 | - |
| 15 | Inspect for poor connections at the windshield wiper motor module. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 16 |
| 16 | Replace the windshield wiper motor module. Refer to Wiper Motor Replacement . Did you complete the replacement? |
- | Go to Step 20 | - |
| 17 | Replace the windshield washer relay. Did you complete the replacement? |
- | Go to Step 20 | - |
| 18 | Inspect for poor connections at the windshield washer pump. Refer to Testing for Intermittent Conditions and Poor Connections
and to Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 20 | Go to Step 19 |
| 19 | Replace the windshield washer pump. Refer to Washer Pump Replacement . Did you complete the replacement? |
- | Go to Step 20 | - |
| 20 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 3 |