heat c6 overheat hot fans radiator coolant temp

I have a 2007 C6 Base Auto. When it’s into the low mid 20’s and higher and I’m driving slow in town or in “slow” traffic my coolant temps get up to 235 maybe even 240. I’ve cleaned out my radiator fins and those of the condenser too. (I made a tool to blow them out/clean them from the back with...