1998 Oldsmobile Cutlass BaseFACTORY OEM SERVICE PROCEDURE

All Windows Do Not Operate

  1. Disconnect master window switch connector C2. Turn ignition switch to RUN position. Connect test light between ground and master window switch and harness connector C2, terminal "C" (Brown wire). See Fig 1 . If test light illuminates, go to next step. If test light does not illuminate, go to step 3).
  2. Connect test light between master window switch connector terminals "A" (Black wire) and "C" (Brown wire). If test light illuminates, go to step 4). If test light does not illuminate, go to step 5).
  3. Using test light connected to ground, backprobe right instrument panel wiring junction harness block connector C3, terminal A8 (Brown wire). If test light illuminates, go to step 6). If test light does not illuminate, go to step 7).
  4. Replace master window switch. Recheck system operation.
  5. Repair open in Black wire between master window switch and ground splice pack G301. Recheck system operation.
  6. Repair open in Brown wire between right instrument panel wiring harness junction block and master window switch. Recheck system operation.
  7. Replace right instrument panel wiring harness junction block. Recheck system operation.
    Fig 1: Identifying Power Window Connector Terminals
    G98H00429Courtesy of GENERAL MOTORS CORP.
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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.

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