During a recent oil change I noticed that the engine oil cooler lines are leaking. It appears to be coming from the crimp where the aluminum line and rubber hose meet. I figured that I'd need a set of new OEM lines. Looking from underneath, it seems like it would be impossble to replace the entire lines because of all the stuff near where the lines connect to the block?

So I hit the search button and didn't find any threads in the past 6 months that are related to '01-'02 6.0L but I did see something mentioned about cutting off the lines near the crimp, install compression fittings and a pair of new hydraulic hoses. Is this preferable method for this repair? I'm a bit leary of compression stuff being used with something under pressure but if it does work very well then I would be willingly to do it.

If so, what size and type of compression fittings will I need? Also what size hydraulic hoses?

Am I the only '02 owner with this problem?

Nope, seen it before and they can be replaced, it justs takes patience because of the way they are routed. Might have to raise the engine or drop the front diff a bit to get them in. If I remember right, they aren't that expensive from the dealer (around $100-$150).

This is a typical GM leak problem, every one of their engine oil cooler lines, tranny cooler lines and most power steering lines will leak at the crimps over time.

I would imagine that the 02 lines are easier to find then my 94 lines. I would like to hook my cooler back up. (The lines were removed before I got the truck) But I have had a heck of a time finding these things. NAPA, CarQuest, Checker, O'Reilies, etc can not find anything for cooler lines. *sigh*

Just replaced mine. $55 give or take from Glendale Auto (made in China, God help us). Was a bitch routing those things through. I'm replacing the lower trans line tomorrow because it's leaking at the crimp. $30 from the dealer but it didn't come with new clips and it's made in Canada, eh?

My 04 leaks pretty bad as well. It like they will be a real paid to change.

lol not to get off topic but I always laugh when I hear you guys say 'eh'. In my travels from Texas to Montana, whenever I would say 'eh' I would get the response 'b'. haha, I know, again, sorry for getting off topic, i just figured I'd share that.