Have a 2024 Silverado 3500 with the 6.6 gas. Only about 1000 miles but quite disappointed in the performance and mileage so far. Specifically the transmission doesn't seem to want the engine pulling below about 3000 rpm. Will it get better or is there a tune that will let the engine work without revving so high. I probably was spoiled by my '13 Cummins /Aisin. Ed
