I have a 2007 Silverado with a V6. I was on the way to work today and my temperature gauge quit working. I also got a dashboard message saying "Engine Hot A\C shutting down. The truck was running just fine. I left work at lunch and halfway to the auto parts store the guage started working and the code went away. I am thinking that the Coolant Temperature Sensor must be bad or going bad. I bought one and got home. I cannot find the sensor on the truck. I can't even find the thermostat. I was hoping somebody has a picture that shows the location of the sensor.