I have an 02 Tahoe I purchased recently, and I have always noticed a huge puddle dripping from the AC drain coming out of the firewall and dripping on the ground. I constantly have people at work telling me I have a coolant leak. Anyway, I know it is coming from the AC, but is this normal for a tahoe to leak so much. Does the AC run even when you are using just the heater? Any help would be greatly appreciated!