The cold weather has once again brought up a persistent nagging problem my tahoe has had since I bought it. In the winter, it takes forever to warm up, and when it does, it gets nowhere near the normal operating temp of 200 degrees. Every winter it will trip a P0116 Engine Coolant Temperature Circuit Range/Performance Problem. I have replaced the thermostat three winters in a row and the coolant temp sensor as well. It's almost like the cooling system is working too well. I can drive it around for an hour in stop and go traffic and it won't get above 160 degrees. It has a 186 degree (factory temp) thermostat in it. Everything in the cooling system is stock. I'm too the point where I just want to put some cardboard in front of part of the radiator, but that's ****ing ghetto. Anybody ran into anything like this before?