I'm trying to do a tune up on my 2002 Trailblazer, it's got close to 50k miles on it and its been feeling sluggish lately. I ordered a set of plugs for it but I they dont list a fuel filter for it in the books and the parts place can not find a part number for it. It's probably the same filter used on other models and is sitting on the shelf but they dont list it for some reason. Anyone happen to know this or know how I could find it? I know its not LT1 tech but thought I'd try here. Thanks.