LM4 ✓ Factory-verified

GMC · Regular Production Option

Engine, gas, 8 cylinder, 5.3L, sequential fuel injection, aluminum, GM

Years 2003–04 Models 1 Factory citations 2

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Also documented for BuickChevroletOldsmobile

Documented applications

Envoy — GMT360 (2002–2009) →

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

  ⛭ GM factory document — 2004 gmc envoy xuv rpo code list, p.1.

This page aggregates every documented appearance of LM4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.