Ok, so I'm looking for some advice,
My 99' deville is running rather hot, my thermostat was in bad shape so I went and replaced it, but now it's running warmer than before, its never overheated but i regularly clean out the cooling system as i know the 97 to 99 northstar engine has shorter head bolts and dont want to warp head or anything, but it was staying a 203F or below and now it's running 208 to 212 at highway speeds. I know that's not super hot as the fans won't kick on until 224F but at highway speeds it should run around the high 190's I thought. I'm out of ideas and worried that if will end up overheating in these summer temps. Any thoughts?