Just purchased a 2020 Premier. Traded a 2011 w 98,000 mi. Happy so far for the long buck. Mileage seems to have improved and electronics and headsup display are like an aircraft.
Just talked with my svc mgr and they did not know about it but after talking with his body shop mgr they found that a bulletin has been released by GM on 8/3/2020 (day I took delivery) and it is the result of water accumulating in the drain tray for the sunroof and takes a while to drain down...
Recently purchased (1Mo) Tahoe appears to have a rain water ingress somewhere around the top of the windshield or maybe through the trim strips on each side of the roof. Went through three separate heavy rainstorms yesterday and at highway speeds heard a noise overhead before the sunroof that...
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