Have you changed your Cabin Air Filter?I have a 2015 Colorado and the AC smells like mildew when I have it on. I’ve tried to find the drain tube for it but haven’t had any luck. Does anyone have a picture or know of a video that could show me?
The drain hose is part 25I’ve changed the cabin air filter and it still has the smell. I bought some cleaner that you spray on to the evap core and it will clean and kill anything that might be growing on it. The easiest way of getting the cleaner on the evap core is going through the drain tube, the only other way is by taking the blower motor out.