the 02 has the faster processor and less likely to have false knock. The 99 pcms suck the big one IMO. You can either get an 01-02, they are both the same.
Chris
the 02 has the faster processor and less likely to have false knock. The 99 pcms suck the big one IMO. You can either get an 01-02, they are both the same.
Chris
2009 Silverado, HPTuners, all stock.
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