...truck hasn't been started in over a year, I hooked up jumper cables to try to start it, but wouldn't crank until I jumped out solenoid. resulting in a slow crank/starter was dragging. any thoughts or suggestions on what to try next?
Yes A few thoughts to star lets get the obvious out of the way. Did u check and or change oil. Most likely bad connections causing slow crank but be safe get a socket and ratched and see if you can turn engine over by hand then if can clean all connection from battt 2 solenoid 2 starter pos and grnd. and you dont want to crank engine very lomg cause alot of dry parts when u get it cranking only crank a few sec then have someone help u and use a shot of starting fluid as cranking this should help it start faster and get oil pumping rather than a long crank time before it starts