How do I know if my 2005 Kodoak Duramax 6.6 has the "Oil Life System" And how does it work? Were can I read about this system?
As you can read I am new to this type of engine. This is the first Chevy I have ever owned. Thanks in advance Lou

It comes standard on all the 2003-2006 models. There should be information on it in your Owners Manual.