K53 ✓ Factory-verified

Hummer · Regular Production Option

Fuel system, robust fuel system

Years 2004–05 Models 1 Factory citations 2

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Also documented for CadillacChevroletGMCOldsmobile

Documented applications

H2 and H2 SUT — GMT820 (2003–2009) →

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

  ⛭ GM factory document — 2005 hummer h2 rpo code list, p.1.

This page aggregates every documented appearance of K53 in the Hummer reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.