ok guys, I went and test drove a new to me dump truck. I wasn't able to get the results I wanted out of a 2 spd rear end. usually I rung gears 1 through 5 then drop into neutral up shift rear end then back into high. this may not be the proper method but served me well on all the old ford trucks I drove. they were gas burners if that makes a difference. The truck i just test drove was a 3126 cat with a 5 spd and 2 spd rear in a gmc, can anyone tell me the correct sequence to shift up and down as I don't know what I am doing right and wrong