I have a 1998 Chevy Lumina and it continues to
overheat, when I come to a stop at a stoplight the
Replace thermostat first,see what happens
Sounds more like a cooling fan inoperative, make sue the cooling system is full cold, you will need to have the cooling fan circuit checked out. Or you could rewire it to run when you turn on the ignition key, or direct to the battery, that makes it hard on fan motors but it can get you by until you can get it to a shop.
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