CTS V8-5.7L VIN P (2004)
3. Install the oil drain plug to the engine block.
Tighten the oil pan drain plug to 25 Nm (18 ft. lbs.).
4. Lower the vehicle.
5. Fill the crankcase with the proper quantity and grade of engine oil.
6. Operate the engine, check for leaks and oil pressure.
7. With the engine off, remove the oil level indicator.
8. Wipe the indicator with a clean cloth.
9. Install the oil level indicator.
10. Remove the oil level indicator in order to check the level.
11. Add oil if necessary.
12. Reset the engine oil life monitor.