start up but no throttle
02-18-2015, 01:19 PM
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start up but no throttle I put what must be a 2006 sierra 4.8 into my 56 cameo. Started up ok but no throttle. Nothing. No codes, check engine light goes off after startup. Engine runs smooth in default mode. Started back from the pedal checking voltages. I have 6+v at all pins at pedal and pins out of the TAC. The plug from the engine harness to the TAC has 12v on pin2 ( should be 5 v reference) and no voltage on any other pins. Pin 15 should be ground (g104) but is not. Where do I go from here? Did I miss a ground wire somewhere?
