Yukon is leaking oil from it seems the oil filter but its on properly any ideas? on 1996 GMC Yukon

Its gotten pretty dirty under there due to the leak when traveling and i think it might be affecting my starter because it wont start up correctly when turning the key it sounds like its going to start but then makes weird noise and shuts off. I noticed that when i halve turn the key and let it go like if i changed my mind about starting it, the truck instantly turns on with no problems. What puzzles me is how when turning the key all the way like it normally should it stalls i think i'm not sure what the right term is but i believe the oil is maybe affecting it. Sorry for such a long post new to this but i should would appreciate any help or ideas on fixing this its become such a burden.

by in Riverside, CA on June 18, 2013
1 answer 2 comments
ANSWER by on June 18, 2013
POSS OIL COOLER ABOVE THE OIL FILTER.EASY TO REPAIR, REMOVE OIL FILTER THEN OIL COOLER ADAPTOR AND INSTALL NEW O RING
COMMENT by on June 18, 2013
Wow it sure sounds easy.... Thanks bro i appreciate it!! By chance any ideas on the starter or should i just go ahead and replace it?
COMMENT by on June 18, 2013
replace it while your there