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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    4GK Factory-verified

    Chevrolet · Regular Production Option

    Spare tire, LT245/75R16E on/off-road, blackwall (SEO)

    Years 2005–07 Models 1 Factory citations 3
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    Documented applications

    Silverado — GMT800 (1999–2007)
    • 2005–2007 Factory-verified
      GM Heritage factory kit — 2005 Chevrolet Silverado 1500HD, p.127.
      GM Heritage factory kit — 2006 Chevrolet Silverado, p.289.
      GM Heritage factory kit — 2007 Chevrolet Silverado, p.300.

    This page aggregates every documented appearance of 4GK in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.