My computer is trrowing a 43 code esc unit code and a 35 code for the idle air control. my question is that the esc module is supposed to be located on a bracket by the passenger valve cover but it is gone, eiter has been removed or done away with, and i cannot find the wires or the plug that goes into it. i have traced the knock sensor its located on the passenger side of the block and its wire runs into the ecm. did this year model come equipped with that module or is there another problem i should know about. any help would be appreciated