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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1575 (Wiper System & Washer System) >> Diagnostic Information and Procedures >> Wiper Inoperative - Rear >> Test Description >> Notes

Test Description: Notes

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 3. If any of the liftgate or liftglass switch fails ajar the rear wiper will not operate.
  2. 4. This step determines if the liftgate control module is receiving the correct switch position message from the body control module.
  3. 5. This step determines if the liftgate control module is attempting to operate rear wiper motor in the requested operating mode.
  4. 6. This step tests the resistance through the rear wiper switch. The measured resistance will be highest in the OFF position and reduce as the switch is turned from positions 1 through 3.
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