Guess I was wrong about the second gear thing. Im glad my 450 is a manual. My Chevy's never did that .
Not sure about older ones but the 4L60's they had in 1/2 tons in the late 90's would start in 2nd if you put it in 2 and used less than 50% throttle on take off. If you dug deep into the throttle it would kick to 1 but otherwise stay in 2.