2015 GMC Terrain SLT2
I have a 2015 GMC Terrain SLT2 with no heat. The actuator was replaced as
well as other parts that required the entire dash to be removed. The heat works
sometimes, when its cold and I rev the engine I get hot air. The thermostat was
changed as well, which slightly improved. The AC was recharged and all fluids
are fine. We are stumped