How do you remove the valve cover on a 1997 Buick LeSabre. Specifically the?

plastic spark plug cover that is attached to the valve cover and covers the bolts.How do you remove the valve cover on a 1997 Buick LeSabre. Specifically the?i know what you mean. i changed the valve pan gasket on my oldsmobile and you have to remove the plug wires from those covers and then take out the bolts.