Update: I went and got a pressure guage, they gave me the wrong one wouldn't fit on the fitting on the truck. But I also got and replaced the "Coolant Temp Sensor" it started right up, and it has sit for over a week in this cold weather. Never thought it would have anything to do with it. Back in the 60's when I worked on engines, the sensor just worked the heat hand inside

Thanks everyone for your help, I'm sure glad I joined this fourm, I think people on here are great. And by the way I have 2 more vehicle's to ask question about