Owner Manual
Page 292
... 3500 models are equipped with a loaded vehicle. Maximum Recommended Up-shift Speeds Engine 5.7L Model L to 2 2 to 3 2500/ 3500 3 to 4 4 to 5 5 to the clutch can result from a standing position when carrying a payload or towing a trailer. Shift at the vehicle speeds listed for both fuel economy and performance, it should be upshifted as...
... 3500 models are equipped with a loaded vehicle. Maximum Recommended Up-shift Speeds Engine 5.7L Model L to 2 2 to 3 2500/ 3500 3 to 4 4 to 5 5 to the clutch can result from a standing position when carrying a payload or towing a trailer. Shift at the vehicle speeds listed for both fuel economy and performance, it should be upshifted as...