Z89 ✓ Factory-verified

GMC · Regular Production Option

Market brand, Isuzu

Years 2003–04, 2006–09 Models 1 Factory citations 3

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Documented applications

Envoy — GMT360 (2002–2009) →

• 2003, 2004, 2006–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2003 gmc envoy 2wd rpo code list, p.1.

  ⛭ GM factory document — 2006 gmc envoy 2wd rpo code list, p.1.

  ⛭ GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.

This page aggregates every documented appearance of Z89 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.