LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 1997 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System >> Testing >> All Windows Do Not Operate
September 30: LEMON manuals is back up on a temporary server! Slowness is possible

All Windows Do Not Operate

  1. Turn ignition switch to RUN position. Disconnect left front window switch connector. Connect test light between Yellow wire and ground. If test light illuminates, go to next step. If test light does not illuminate, repair open in Yellow wire between left front window switch and instrument panel fuse block.
  2. Connect test light between Yellow and Black wires at left front window switch connector. If test light does not illuminate, repair open in Black wire. If test light illuminates, replace left front window switch.
scientia non olet · About LEMON Manuals