RPOARCHIVE
Loading index…

    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    R8Z Factory-verified

    Chevrolet · Regular Production Option

    OnStar One Fleet, 48 months

    Years 2007, 2014–15, 2025–27 Models 27 Factory citations 66
    Query this via API →

    Also described as OnStar Directions and Connections service, 2 additional yearsOnStar Directions and Connections, 2 additional years (fleet)OnStar, 3 years Directions and Connections serviceOnStar One Business Plus, 48 months of serviceOnStar One Fleet plan, 48 months

    Also documented for BuickCadillacGMC

    Documented applications

    Equinox EV — Ultium BEV2 (2024–2027)
    Silverado HD (T1XX, 2020–2027)
    Tahoe — GMT900 (2007–2014)
    • 2007 Factory-verified

      OnStar fleet code from the 2007 kit order guide (fleet or government order types); the service lists do not print it. MSRP $679; the RFC footnote names R8P or R8Z as the plans that, with UE1, give three years.

      GM Heritage factory kit — 2007 Chevrolet Tahoe, p.144, p.172, p.177.
    Tahoe — T1XX (2021–2027)
    TrailBlazer — GMT360 (2002–2009)
    • 2007 Factory-verified

      OnStar fleet code from the 2007 kit order guide (fleet or government order types); the service lists do not print it.

      GM Heritage factory kit — 2007 Chevrolet Trailblazer, p.154.
    Uplander (2005–2008)
    • 2007 Factory-verified

      OnStar fleet code from the 2007 kit order guide (fleet, government or commercial order types); the service lists do not print it.

      GM Heritage factory kit — 2007 Chevrolet Uplander, p.114.

    Related codes · mentioned in these notes

    2LT3LTR8PRFCU5GUE1VV4

    This page aggregates every documented appearance of R8Z in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.