Hy Johnfog, the part number for the original GM supplied filter element is 5572288, that was AC part number P-115 [ that number may be no longer used] and tha Napa cross to the GM number is FIL 1100 $12.69, but as red58 says many different filters for those engines have been marketed over the years, so it would be a good idea to remove the element and look for numbers,or take measurements of the element, and container when you go element shopping, hope that helps.