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Hummer H3For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.
Definitely have a leak, once in a while I notice more than a few drops on my garage floor or on the asphalt while at work all day. I'm thinking it's oil but can't rule out steering fluid or trans fluid. The boss is annoyed at the stains in the parking lot, I gotta figure this out and fix it.
Sprayed everything down with brakeclean, wiped with shop towels then went to the carwash and spent 10 mins pressure washing everything. Back home, wiped everything down with shop towels again and laid clean cardboard underneath, 10 hours later in the morning I didn't see a single drop on the cardboard. Crawled undeneath and got these pics, I looked everywhere with a trouble light and this is the only area that seems suspect. None of the main gaskets are leaking, oil filter seal is good, nothing obvious on any hoses/lines. Everything up top is good, nothing appears to be dripping down. This is the only area that looks suspect. Passenger side right behind the oil filter and in front of the steering cylinder, what is that little hole? The oil filter itself is sold, no leaks there. Is there a plug missing from that hole? Can't be a line that is supposed to be there. Is it a vent?
Oil pressure switch is right above the oil filter. It looks like you have some oil on the filter. If you say the filter is good, check a little higher.
I'm not sure what you are referring to when you say that "little hole".
I actually bought a new oil pressure switch first thing before even investigating, then saw the old one is dry. Still going to install it though. Bit more oil leaking after a few days, going to clean it up once again and keep searching.
That was my first thought, I bought a new oil pressure sensor before even starting, once I looked it was all dry above the oil filter. Pic below with the filter removed during oil change.
Just took the following pic, the leak is finally back. It has to be running down the oil pan and dripping on those steering lines. I'm going to look closer at that seal on the bottom pan, red arrow.
Locating an oil leak - Pics included
