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HOMESERVICE MANUALSPONTIAC1991TRANS SPORT SE, 3T40/MD9REPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONMAINTENANCE REMINDER LIGHT (RESET PROCEDURES)ENGINE OIL REPLACEMENT REMINDERENGINE OIL REPLACEMENT REMINDER RESET - PROCEDURE 25
1991 Pontiac Trans Sport SE, 3T40/MD9

Engine Oil Replacement Reminder Reset - Procedure 25

1991 Pontiac Trans Sport SE, 3T40/MD9SECTION Engine Oil Replacement Reminder Reset - Procedure 25
  1. An OIL LIFE INDEX is one of the displays on Driver Information Center (DIC). It will display remaining oil life as a estimated percentage of the useful life of oil.
  2. It will show 100 percent when the system is reset. When the oil life is 0 percent, the display will show CHANGE ENGINE OIL. After performing necessary services, reset service reminder.
  3. To reset service reminder, turn ignition to on position. Do not start engine. Depress and hold RANGE and FUEL USED buttons until OIL LIFE INDEX appears on DIC display. Depress and hold RANGE and RESET buttons for 5-60 seconds.
  4. When CHANGE OIL SOON light flashes 4 times, remaining oil life index is reset to 100 percent. If CHANGE OIL SOON comes on and stays on for 5 seconds, display did not reset. Repeat step  3.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
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  • • 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.