Buggsy, I have a low mileage 2005 K1500 so I am a frequent visitor to a couple of Silverado forums and there seem to be a couple of common complaints about the era of Silverado you're interested in. One is the quirkiness of the 8-speed transmission, harsh downshifts especially, sometimes reprogramming helps, but a lot of owners get the line operates as designed. The other common complaint is the Chevy shake, usually above 70 mph and there doesn't seem to be a common resolution to this. Some owners have reported resolution with a force wheel balance, but others have had to have the driveline replaced, the torque converter replaced if a pan drop and filter change doesn't rid the transmission of some new assembly gunk, and most troubling of all some owners have gone through all of the above with no resolution and result to their state's lemon law. So, if you're still interested in this Silverado, make sure your test drive includes a freeway stretch where you can get up to 80 mph or so.