re: New truck spin-off, overhauling a GM motor.

Just for your information there was a GM recall or customer satisfaction on those tailgate cables. If it was a recall they never expire. I would also have a dealer check for technical bulletins on oil consumption. If it is valve stems or seals it would be a lot less expensive than a overhaul. Do you get a puff of blue smoke when you start it after sitting overnight? That would be valve stems. If you want to put a new engine, GM sells re-manufactured engines with preety good warranty. 3 years I think. Also check out Rydell Powertrain. They offer 3 yr, unlimited mile warranty.