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Home >> GMC >> 1985 >> Jimmy 5.7 L >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Windows - Tailgate >> Testing >> Tailgate Window Will Not Open From Panel Switch, Otherwise Operates
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Tailgate Window Will Not Open From Panel Switch, Otherwise Operates

  1. With ignition switch on, and tailgate open, place panel switch in "DOWN" position. Using a grounded 12-volt test lamp, probe Tan/White wire at panel switch.
  2. If lamp does not light, replace switch. If lamp lights, probe Tan/White wire at window motor, with switch still in "DOWN" position. If lamp does not light now, check for open Tan/White wire between motor and panel switch. If lamp lights, system should operate normally.