How to bleed cooling system on a 1986 chevy truck?
There is no reason to bleed it on that year model. If you think it’s air locked, then remove the radiator cap and start engine and let run for a while, then turn off and let set for 10-15 mins. add fluid if needed then start engine again, let run but not over heat. That should do it. If it still over heats then you have another problem.
