From what I have read and saw at my Dealer stock room ,is that the recall was to give you a new fuel filter. It could have been a AC Delco TP1298-A or -B what ever they had in stock. The new -B filter is a little longer at the bottom. I am only using the -B ones... I figure bigger is better.. I can't say why it was changed to a -B but it was for a reason.
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