I have 2003 H2 that Is 180" limo and over the last 2 1/2 mouths it has had this iusse that comes and go when i push down the gas pedal i get nothing bearley moves and then it will take off if i pump the gas pedal sometimes. have taken it to dealer cant find any thing wrong HELP This is driveing me NUTS

 

start with throttle position sensor. the guy who sweeps up at the dealer otta know that much.
could be other stuff. check what moves when you push with your right foot