Hi, I have a 1992 (I think) suburban that has been sitting 4, maybe 5 years. I need to get it cranked and moved. Can I just charge batteries enough and try to crank it? Friend of a neighbor said something like some lines need to be bled or something? I used to know more about this stuff, but have forgotten a lot, and don't have access to diesel genius family member any more.... Any help is greatly appreciated! I would love to get it running for full time use again, drove like a dream... Was running fine when "parked", just never left home and let batteries run down. Thank you.