So I've bought a 2002 Suburban... I'm not new to them, my dad had 2, a '94 and a 99, both Silverados. This is what I imagine would be called a "Silverado" if they hadn't dropped the package, as it appears that whoever ordered it only missed two options; the rear seat HVAC control panel and the elevendy-third cigar lighter outlet inside the console (there are 3 on the dash, only one of which sports a cigar lighter, and more aroun the truck). It even has sport seats! I don't even know WHY it has sport seats, but I don't care, they're very comfortable. I learned to drive on a Suburban so this is just like comming home to me. Anyway, I have some questions about it. First off, where's a good place to put a CB radio? It has the full console and a sunroof, so the floor and the roof are right out. Where does anyone have theirs? Secondly, this has the 327 motor and seems to be geared very well; it scarcely goes above 2500 revs. What is the best speed to cruise at on the highway for fuel economy? I know most cars are around 55 but I've heard many trucks are more effiecient at a higher speed... not that this will cure my leadfoot or anything, but I'd like to know. Moving along, it's fitted with an OnStar system. Can this be re-activated, and is it worth my money, or is it an expensive gimmick? I have a GPS Nav unit already. Lastly, just general advice about looking after it. Are there any special concerns? I didn't even know GM still used the 327 at all and asumed it had been universally replaced by the 350, but then again they are the same block and all. Should I use conventional oil or an energy-conserving synthethic? Anything else I should know?