It depends on which ones they are, newer filter (both are gold filters but different numbers) has double pleats for better filtration. GM has changed from the old style single pleat filters and reccomends double pleated filters for all new and old applications. I believe, but could be wrong GM even did a free change out of the old style (single pleat filters) a couple of years ago, but I am not sure. I would call NAPA and find out what the current LBZ fuel filter number is.
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