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HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM & WASHER SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESWIPERS ALWAYS ONTEST DESCRIPTION
2002 Chevrolet Avalanche 2500, RWD

Test Description

2002 Chevrolet Avalanche 2500, RWDSECTION Test Description

The number below refers to the step number on the diagnostic table.

  1. 3:  Turn the ignition off while the wiper arms are not in the park position. If the wiper arms go to the park position and stop when the ignition is turned on, an internal fault in the windshield wiper/washer switch or short to voltage in the pigtail harness is present.
Wipers Always On

Step Action Yes No
Schematic Reference:  Wiper/Washer System Schematics  
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
  1. Turn the ignition ON.
  2. Operate the windshield wiper/washer switch through all of the switch positions.
  3. Turn the windshield wiper/washer switch OFF.
Are the windshield wipers always on?		 Go to Step 3  Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS
3 
  1. Turn the ignition OFF while the wiper arms are in the upright position.
  2. Disconnect the inline harness connector C201.
  3. Remove the connector terminal row E from the steering column harness connector half.
  4. Connect the inline harness connector C201.
  5. Turn the ignition ON.
Are the windshield wipers always on?		 Go to Step 4  Go to Step 7 
4
  1. Disconnect the windshield wiper motor connector.
  2. Test the windshield wiper switch signal 1 circuit for a short to voltage. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 Go to Step 11  Go to Step 5 
5 Test the windshield wiper switch signal 2 circuit for a short to voltage. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 Go to Step 11  Go to Step 6 
6 Test the windshield wiper motor high speed circuit for a short to voltage. Refer to CIRCUIT TESTING and WIRING REPAIRS .
Did you find and correct the condition?		 Go to Step 11  Go to Step 9 
7 Inspect for poor connections at the windshield wiper/washer switch. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS .
Did you find and correct the condition?		 Go to Step 11  Go to Step 8 
8 Replace the windshield wiper/washer switch. Refer to MULTIFUNCTION, TURN SIGNAL, AND HAZARD SWITCH REPLACEMENT - ON VEHICLE .
Is the repair complete?		 Go to Step 11  -
9 Inspect for poor connections at the windshield wiper motor. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and to CONNECTOR REPAIRS .
Did you find and correct the condition?		 Go to Step 11  Go to Step 10 
10 Replace the windshield wiper motor cover.
Is the repair complete?		 Go to Step 11  -
11 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.