Hello all it's been a while since I have been here. Today I fear I blew 2nd gear in my 2003 silverado extended cab. Obviously I am going to need a rebuild,my questions are 1- I have noticed a lag between the 1st and 2nd gear shift at wot i think i remember the cure for this is a corvette servo am i correct and if so does anyone have the part# i would need? 2-Any other mods or things i should request?

Thanks