ZY1 ✓ Factory-verified

Hummer · Regular Production Option

Color combination, solid

Years 2004–05, 2009 Models 1 Factory citations 2

Query this via API →

Also documented for BuickCadillacChevroletGMCOldsmobile

Documented applications

H2 and H2 SUT — GMT820 (2003–2009) →

• 2004–2005, 2009 ✓ Factory-verified
  ⛭ GM factory document — 2004 hummer h2 rpo code list, p.1.

  ⛭ GM factory document — 2009 hummer h2 rpo code list, p.1.

This page aggregates every documented appearance of ZY1 in the Hummer reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.