8U4 ✓ Factory-verified

Chevrolet · Regular Production Option

Heater, engine block (SEO)

Years 2001–02, 2005 Models 2 Factory citations 5

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Also documented for GMCOldsmobile

Documented applications

Blazer — S-10 second generation (1995–2005) →

• 2001–2002, 2005 ✓ Factory-verified
  ⛭ GM factory document — 2001 chevrolet blazer 4wd rpo code list, p.1.

  ⛭ GM factory document — 2002 chevrolet blazer 4wd rpo code list, p.1.

  ⛭ GM factory document — 2005 chevrolet blazer 4wd rpo code list, p.1.

S-10 pickup — Second generation (1994–2004) →

• 2001–2002 ✓ Factory-verified
  ⛭ GM factory document — 2001 chevrolet s10 pickup 4wd rpo code list, p.1.

  ⛭ GM factory document — 2002 chevrolet s10 pickup 4wd rpo code list, p.1.

This page aggregates every documented appearance of 8U4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.