Just finished my '05 SSR's first oil change. GM didn't do us any favors when they installed those frame cross-members right where the oil comes out....really messy. Also, that tiny filter will barely come out of the space provided for the same reason, a cross-member is right below it. The original filter is really tough to get a hold on, plus it is stuck really tight. I replaced it with a K&N oil filter and it has a hex boss on the bottom for ease of tightening and later removal.