5S3 ✓ Factory-verified

Chevrolet · Regular Production Option

Engine equipment, 4.3L V6 (SEO)

Years 2001 Models 1 Factory citations 2

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Also documented for GMC

Documented applications

Silverado — GMT800 (1999–2007) →

• 2001 ✓ Factory-verified
  ⛭ GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.

  ⛭ GM Heritage factory kit — 2001 Chevrolet Silverado, p.60.

This page aggregates every documented appearance of 5S3 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.