Clean your AC drain if water is spilling into your car How to Clean your AC drain if water is spilling into your car This next tutorial is going to be showing you how to take care of a problem that is very common amongst drivers. If water has ever spilled on you from inside your car, it's probably from your HVAC. When you use your A/C, condensation builds up as well, and this usually goes down a drain. But if it gets clogged then you might have a problem. This tutorial is going to show you what you need to do in order to clean out the clog to prevent any accidents from taking place again. So good luck, be careful, and enjoy! Buick Enclave AC Problems On a recent 10 hour drive this summer in my Enclave, I noticed the front AC vents were not delivering the normal air flow about 4-5 hours into the trip. My wife and I were starting to sweat. We did not have the rear "aux" system turned on. We tried taking the system off "auto", turning up the fan motor, turning system off to rest it, etc etc, but nothing worked.

We ended up cranking the rear aux system (which was working) to lower the temps and make the rest of the trip somewhat bearable. The next day the front AC worked fine on short twips around town so I know we are not low on freon or anything. On the return trip home, same problem. No front AC after about 4-5 hours of driving in hot weather. Called dealer's service dept who said he had never heard of this problem, but admitted the Enclave does have a series of odd things breaking down. ac outside unit will not turn onAnyone else experience this? car ac repair for dummiesAny suggestions before I take it in to be looked at and lose my car for a day or two?how much to replace a ac unitSee AlsoHow Your A/C System Works I Am posting here because i wanted to offer support about the problems you shared.