GM Service Manual Online
For 1990-2009 cars only

This vehicle has an engine oil life monitor. The engine oil life monitor will show when to change the engine oil and oil filter. This will usually occur between 5 000 km (3,000 mi) and 12 500 km (7,500 mi) since the last oil change. Under severe conditions, the indicator may come on before 5 000 km (3,000 mi).

Vehicle should not be driven more than 12 500 km (7,500 mi) or 12 months without an oil and oil filter change. The system will not detect dust in the oil. So if the vehicle is driven in a dusty area, be sure to change the oil and oil filter every 5 000 km (3,000 mi) or sooner if the CHANGE OIL SOON indicator comes on. Reset the oil life monitor when the oil has been changed.

Resetting Procedure - All Except with Caterpillar Diesel

  1. Turn the ignition to ON without starting the engine.
  2. Fully press and release the accelerator pedal 3 times within 10 seconds.
  3. If the CHANGE OIL light flashes for five seconds, the system is reset.
  4. If the light does not display for five seconds you will need to reset the system again.

Resetting Procedure - All with Caterpillar Diesel

  1. Turn the ignition to RUN with the engine OFF.
  2. Fully apply and hold the brake pedal while you fully press and release the accelerator pedal 3 times within 5 seconds.
  3. Turn the key to OFF.
  4. If the light comes back on again when you start the engine, you will need to reset the system again.