For all of you out there having engine bucking problems please have your alternator checked !!! For it looks like one of my diodes is blown or shorted or put in backwards??? How many of the bucking problemed trucks were made in the time zone that covered the mirror replacment time????? . ??? Was it about 3 weeks either side of MDH of 10,10,19 in 98??? for I have been starting to hear an audiable clicking of the turn signal in the radio this is an other sign that the capacitor in the alternator is going of gone. It is certianly on its way out!!! Everone that has had this problem please reply and should get this solved for once and for all . THE LAST PIECE OF CRYSLURR EXCRAMENT THAT I SHALL EVER BUY:-{} :-{} :-{} :-{} Even Cummins was no help last weekend :-{} :-{} :-{}