Hey there lads I have 03 z71 ext cab 5.3 I took it out tonight, while it was shifting I have 1 gear 2 gear then no other gears when it shifts from 2 to 3 theres nothing at all its like I put it in N ???? when it slow down a little it goes back in 2 ?? trans fuild is not burt could it be the moduel on the tranny that has gone a little crazzy let me no what u think need all the help I can get thanks guys!