. . "I was really looking for one with the 5.7 or a diesel myself.This Suburban is a 2500 series, 454 cid, auto trans, 4x4, tow package etc.I know the gas mileage will be horrible, but just how bad will it be?I only live about 7 miles from my office and just drive about 8000 miles a year so the big engine will not be that big a deal for me.Also what problem areas should I be aware of?" . .