my sons 4wd yukon decided to crap the rear main out, i think. i'm hoping its just the filter mount gasket. won't know til we get it on a lift(have access). anyway, how much time are we looking at from those that have done it on a 4wd? and if it is a rear main, anyone want to send me a pm with an amount they would be willing to do the job for. i'm going to let him decide if he wants to put in the time or the money.thank god he's working and has a little in savings!