I have approx. 15000 mi. on 04 lly, noticed oil drops on driveway, so I crawled under truck to find oil dripping out of outlet intercooler rt side bottom. I tightened clamp (only so when I take to dealer they can see oil). then I removed clamp at top rt. side engine, removed rigid pipe to find oil at the this conection so oil made it up hill to inlet of engine. I suspect tubo seals are going. Anyone else experience this? Otherwise truck runs great. getting 22 mi to gallon highway with 4x4,crew cab.

The LLy has a PCV system, the Lb7 did not. The oil in the intake system is normal from what I've read on this site. GM has a TSB and some kind of sealer (they call it gasket) in a tube to help stop oil from creaping out of the connections.

It's normal, common, and irritating. ;)