where is the speedometer wires to the tranny located or where do any speedometer lines, cables or wires hook up period?? curious cause my 99 GMC Sierra has no speed gauge and wont shift outta low gear.... Just had tranny rebuilt do to the input shaft housing busting and leaving it not even wanting it to roll in neutral when running... crazy huh!! just so its said i wasn't the idiot who drove the piss outta it and broke it but first time ive seen um brake like this. anyway besides checking the speedometer hookups what else could it be?? im exhausted and would laugh if it was just a dumb plug, wire or cable unhooked. thanks!! :D