DD5 ✓ Factory-verified

Chevrolet · Regular Production Option

Mirror, inside rearview, compass, outside temperature display

Years 2005–07, 2025–26 Models 2 Factory citations 5

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Also described as GVWR, 21,000 lb (9,525 kg)

Also documented for BuickGMC

Documented applications

Silverado Medium Duty (GM515, 2019–2026) →

• 2025–2026 ✓ Factory-verified
  ⛭ GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

TrailBlazer — GMT360 (2002–2009) →

• 2005–2007 ✓ Factory-verified
  ⛭ GM factory document — 2005 chevrolet trailblazer 2wd rpo code list, p.1.

  ⛭ GM factory document — 2006 chevrolet trailblazer 2wd rpo code list, p.1.

  ⛭ GM factory document — 2007 chevrolet trailblazer 2wd rpo code list, p.1.

This page aggregates every documented appearance of DD5 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.