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Driving the vehicle on a 4-degree morning I couldn’t control the heat system in my 2024 GMC Sierra 1500 SLT, it would not turn the fan blower to high. Tried turning the system off and back on but nothing changed. Tried switching to floor and vent controls but still couldn’t adjust fan motor speed. Finally left it on windshield control and it started to work alright. Just wanted to know if anyone has had the same issues. The vehicle has 5000 miles on it.