Change all the fluids in the engine. Same with the transmission, transfer case and both differentials. That will also give you the chance to check what comes out for water or rust coloration. Then check over the wiring visually for any rodent damage. Next try rotating the engine over using a wrench on the balancer bolt. I would plan on replacing the belt as well as checking all of the accessories for free motion. Fuel system wise I would drop the tank, pull the pump out and check how bad the tank is, before connecting any power to the truck. Being a steel tank and setting it is likely rusty inside, You can get new tanks reasonably cheap so maybe replace the tank and pump unless it isn't very rusted inside. Depending on where you are it may need the brake and fuel lines replaced if they are rusted, also go through the brakes as they may also be rusted or stuck. Then once that is all finished you can hook up a battery and see what happens. Being it has sat that long I would expect some hidden issues to come up. Tire wise you will want to replace those as well as they are well past the time they should be replaced just for age.
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Tuesday, May 5th, 2020 AT 4:19 PM