2001 jimmy,4 speed,isnt 1st gear supposed to be low gear
 

so this pass winter i put it in no.1 to go up a steep drive way,and just did it now to climb up on my ramps...but it doesnt really go (maybe it would if you really rev it up}...so i just put it in drive and no problem....so does this seem normal?...i dont plan on doing anything,because it runs and drives fine...just curious...thanks