2003 Buick Regal GSFACTORY OEM SERVICE PROCEDURE

Oil Life System: Regal

Without Driver Information Center (DIC)

  1. Turn ignition on, with engine off.
  2. Fully press and release the accelerator pedal slowly 3 times within 5 seconds.
  3. If the CHANGE OIL SOON light flashes, the system is resetting.
  4. Turn ignition off.
  5. Start vehicle.
  6. The oil life will change to 100 percent.
  7. If the CHANGE OIL SOON light comes back on, the system has not reset. Repeat reset procedure.

With Driver Information Center (DIC)

  1. Put the oil life display on, with engine off.
  2. Press the DIC RESET button for 5 seconds.
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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