I have a 1997 Chevy suburban k1500 and the speedometer, tachometer, odometer, trip meter, and the PRNDL indicator light all dont work at all.. they all went out at once so i dont think its a problem in the cluster but rather something electrical. everything else works fine. no engine codes, no blown fuses shifts gears fine etc. i think it may be the speed sensor but i dont want to replace it if it isnt broken. any thoughts guys?? Thanks!!