well they did the same thing to me- he explaned that untill the part has failure in this instance they cannot replace it - but you can pay to replace it and then FoMoCo should reimburse you for the money you spent-
but hey ill trade your experience for mine-
I had an engine knock that I brought to the dealers attn in Jan. they did nothing and now I have a roasted crank main bearing- IE a total loss.
