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HOMESERVICE MANUALSCHEVROLET1998CHEVY VAN G2500, VAN CARGO, 5.0 MREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTWIPER/WASHER SYSTEMSWIPER SYSTEM AND WASHER SYSTEMDIAGNOSTIC TESTSTEST 9: INTERMITTENT OPERATION
1998 Chevrolet Chevy Van G2500, Van Cargo, 5.0 M

Test 9: Intermittent Operation

1998 Chevrolet Chevy Van G2500, Van Cargo, 5.0 MSECTION Test 9: Intermittent Operation
  1. Remove wiper 25-amp fuse No. 11 from fuse block. Connect ammeter across fuse block terminals. Turn ignition switch to RUN position. Run wiper in high speed with windshield dry. Note lowest current draw. If lowest current draw exceeds 5.0 amps, go to next step. If lowest current draw is less than 5.0 amps, replace wiper motor assembly.
  2. Replace wiper blade inserts. Repeat test. If current draw is less than 5.0 amps, test is complete. If current draw exceeds 5.0 amps, disconnect drive link from wiper motor crank arm. Repeat test in step 1). If current draw is less than 5 amps, check wire drive system module for binding. Repair or replace as necessary. If current draw exceeds 5 amps, replace wiper motor assembly.
RENDER: 1.0x

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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.