UD4 ✓ Factory-verified

Hummer · Regular Production Option

Alarm, vehicle speed, 120 km/h

Years 2004–09 Models 2 Factory citations 4

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Also documented for BuickCadillacChevroletGMCOldsmobilePontiacSaturn

Documented applications

H2 and H2 SUT — GMT820 (2003–2009) →

• 2004–2009 ✓ Factory-verified

  the lists print 120 K/H (2005: K/h).

  ⛭ GM factory document — 2004 hummer h2 rpo code list, p.1.

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

H3 and H3T — GMT345 (2006–2010) →

• 2006–2009 ✓ Factory-verified
  ⛭ GM factory document — 2006 hummer h3 rpo code list, p.1.

  ⛭ GM factory document — 2009 hummer h3 rpo code list, p.1.

This page aggregates every documented appearance of UD4 in the Hummer reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.