1998 Oldsmobile RegencyFACTORY OEM SERVICE PROCEDURE

System Check

  1. With all windows closed, turn ignition switch to RUN position. Briefly (less than .3 second) press master window switch down. Window should descend a small distance, then stop.
  2. Press left front window switch down and release (more than .3 second). Window should descend completely (express mode).
  3. Press left front window switch up. Window should raise as long as switch is held up, then stop when switch is released (no express). Repeat step 2). While window is moving down in express mode, press switch upward. Window should stop express decent.
  4. Lower and raise other windows from master switch. All windows should operate quietly and smoothly through full range of travel.
  5. Lower and raise each window from window switches. All windows should operate quietly and smoothly through full range of travel. Note any symptoms and proceed to appropriate test.
  6. Place window lockout switch in LOCK position (if equipped). Rear windows should not operate from individual switches, but operate normally from master switch.
Factory Service Tools

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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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