[C10 - C90 Bill]

Starting in a Low Gear (not necessarily the Granny gear) is also easier on the Clutch as NewBayColony has mentioned above. The truck manuals also recommend starting in Low Range with a 2-Speed Rear, but I agree that it won't ruin your truck if you don't. Some Transmissions like the SM 420 and SM 465 4-Speeds, I always start in Granny 1st. To me 3-Speed shifting is for Manual Shift cars, lol. Seems to work, I never wore out a Clutch yet.