Richard Kerkau

My 2008 Sierra 4.3 randomly gave a false engine hot a/c turned off indicator. After research on web and much frustration I am pretty sure I solved my problem. Just like most the searches indicate, I replaced the thermostat and engine coolant temperature sensor and connector. At first this did not work and I still got false indicator. After further research I discovered the parts house gave me a 180 thermostat instead of the 195. With the 195 my engine heats up to normal running temp (just under 210) and no more false indicator. Bottom line is make sure you get the 195 thermostat and not the 180.