i have an 02 trailblazer that will not engage the starter and you cannot shift on 2002 Chevrolet Trailblazer

also the gauge panel tachometer bounces and the info center says to service abs. used a snap on scan toool to check the bcm no codes the vehicle than started moved it after i shut it of same symptoms any thoughts ?

Asked by for the 2002 Chevrolet Trailblazer
you may have a inst cluster prob with gauges, this is a very common prob with gm clusters. scan traction codes with scanner and post so we can adv