2000 Other Oldsmobile Models Flushing Coolant System

I would first try replacing the thermostat. (Cheapest first). With a slightly lower temperature. That should clear it up. If not I would then flush it, buy a bottle of radiator flush and all the directions are right on the bottle. Should not need to do anything more than what Ive just explained, but in the event that it does not change anything, I would then test the engine coolant temperature sensor and have it replaced if necessary. Still fairly cheap. And last but not least, you may then need to replace the radiator, but I dont think its gonna come to that, but then of course, before doing all of this, check fluids(oil, coolant) to make sure they are at their proper levels, because that will definitely make your engine run hot, and change airfilter if it is dirty