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Help needed for installation of transmission cooler on 2018 Traverse

32K views 56 replies 15 participants last post by  (None)  
To add to this, I see some pics early on with the radiator shutters. My ‘22 has the shutters and I’m thinking they are blocking the aux trans cooler while at highway speeds…. Does anyone know when they open/close? Do the bottom shutters stay open on the highway?