NEED HELP! What do I need to do to fix it from overheating? on 2001 Jeep Cherokee

I've been noticing that my check gauges light has been coming on and it's been running in the red. But for some reason while driving on the highway with warm air full blast it goes down and then eventually comes back up. Got to work this morning and radiator cap looked like it leaked and had a hissing sound coming from it. Haven't changed the coolant in a while and I'm pretty sure I need an oil change. Could those be what's wrong? I'm not much of a car guy so I have no idea.

Asked by for the 2001 Jeep Cherokee
by driving it overheated, you may have caused internal damage to the motor. look at the coolant level, could be a bad thermostat, clogged radiator or blown head gasket.

you need a shop to check it for you and give you the reason for the overheating. by driving it, you will do more damage to the motor.