I am a new member here. Just took delivery of my 2019 Laramie yesterday. During 3 hours of driving yesterday evening, 88 degree day, I was absolutely fuming that the AC sucked so bad on my new truck. After a Google search, this thread came up and I became a member. I called my sales manager, told him of the Service Bulletin fix for the flapper, and I am scheduled for the fix next Monday. I also went to harbor freight and bought the clamps, and stopped by Advanced for the valve. I put the clamp on first for a quick test and interim solution until after my Dealer visit. I was expecting to not notice an improvement until I was driving for 5 or 10 minutes. The engine was after all still warm (200) from running this errand. But after clamping the hose, cranking it up and checking my hose for flow.... I got in for the test drive and my vents were already blowing so cold I could see the steam. It was frigid. I'm so ****ing frustrated I have to do this on a $80k truck you have no idea. 3 months out of the year here, you need heat and defrost in the AM and A/C in the afternoon. This is unacceptable but I am thankful I now have the coldest AC of any vehicle I've driven in the last 10 years.
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