Overheating

If they mean there is still air in the system, remove the radiator cap when the engine is cold and check the coolant level. It should be right at the sealing surface, or within an inch of that. Add coolant as needed and start the engine. I can't remember if your truck uses a heater control valve, so setting the heater/AC to full hot is a good idea. As it warms you may see level drop. Add coolant as needed. If it starts to boil over, put the cap back on and let it run for a minute. Obviously, if you see the temperature climb too much, too fast, shut the engine down. I don't remember the trucks having cooling system bleeders like some Honda's and Toyota's have. How does the oil look on the filler cap and dip stick? A note about coolant. I am in California so I would just add regular water but if it gets very cold where you live, consider using a mix of antifreeze and water. I personally like the 50/50 premixed stuff you can buy at most auto parts stores. It's inexpensive and there's no worrying about adding to the system. Make sure you buy the correct type of antifreeze for your system!! I hope this helps!