i really like the manual switch idea. I need to figure out how to tap into the correct wire, etc... Also, does your firewall on the side adjacent to your right leg get hotter then Hades? Were you able to put your high cap radiator in the same spot as the stock? I see they have kits to mount the radiator in the back in the cargo area, but i'm not crazy about that idea. Thanks for all your help and ideas.I had the same problem with my 2017 SS. Check that the automatic fan switch is working. Mine had an intermittent problem, that we didn't discover until after installing a high capacity radiator and fan. We could never find the problem, so we added a manual switch. With the thermostat removed (another effort we tried to solve the problem), the temps are much cooler and the heat from the radiator is much less of a problem. Bleeding the engine is difficult because the coolant lines are lower than the engine and radiator. I think there’s a hose on the right side of the engine you can loosen to help burp the air out of the engine, or hang it from the front bumper.