Hey guys I have a 03 H2 and have started to see a couple spots about 6 inches in diameter under where I park my H2 can anyone tell me what are common oil leak areas. Obviously oil pan would be easiest, but at 92,000 miles are rear mains prone to leak? Any help would be appreciated before I tear into it.

 

I don't know what the part is called (before i get flamed) but i had a couple of small leaks towards the front of the engine. There are two hard looking oil feed pipes that come up from the front of the sump, just off to the driver's side if i remember rightly. One had begun to deteriorate, so I had them both replaced, and the sump (pan) gasket. The GM guy that did it said this was fairly common. (I saw the leaks myself, so i know he wasn't just pulling out parts to replace at random.

 

I have seepage coming from around my oil pan. Drives me nuts so I'm trying Lucas Engine Oil Stop Leak for a few oil changes to see if it helps. It has great reviews so I figure it's worth the try before dropping the pan....which looks like a pita.

FYI, the only good way to see your leaks is to remove the skid plates, clean the engine, then watch it over time.

 

I have an 03 and I had to fix my main seal leak. Lots of labor.

 

My oil pan gasket weeps a little but doesn't really leak. I'm going to change the gasket soon. I'm going to take off the crossmember and drop the differential 2 inches and do it myself.