Some one with good writing capabilities needs to write to GM (whatever division to contact) with the question at hand...something along the lines of "How can your owners manual say.blah blah) if in fact the fuze conducts no power to re-set the ECM function for octane re-calibration..? just a thought....
who is the GM Rep..here on C5? let them research this or get name of GM contact for this info...settle this once and for all.