I have a 96 gcv w/ 3.8l and was operating decently although the past 6 months have had random issues with stalls at any given time (highway, city, stop or anywhere between) and would pull only P0340 cam pos sensor. This might not happen for a month or might happen every couple of days.Well, on my way to work the other day it died and wouldn't start. It actually did start but would run as a vehicle or machine would run when starting after being flooded (although it wasn't as there was no gas odor) very rough and low rpm but as soon as you touch the gas it would die (this was when the engine was hot). Later after work as I was waiting for the the tow truck to pick up, it wouldn't start at all. When I got home i checked compression - OK so timing chain not jumped. Coil pack tests ok. Had a spare (not new cps) I installed, still no start. Am looking for info on what to use as gap for cps when no paper attached - but can't find any (I notice people have .050 for crank pos sensor but no info for cam pos sensor). Can't seem to find too much on testing the crank pos sensor either. I did some checks per shop manual, with coil pack connector off and metering between B+ and ground - it says when you turn ignition on it should show voltage and then it should go away if sensors are ok - mine shows voltage when ignition is on but it doesn't go away. Has anyone seen this?