Fuel, additional 3 gallons

Years 1998–02, 2005, 2023, 2025–27 Models 5 Factory citations 22

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Also described as Fuel, additional three gallons

Also documented for GMC Oldsmobile

Documented applications

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

1999–2000, 2005 Factory-verified

GM factory document — 1999 chevrolet blazer 4wd rhd rpo code list, p.1.
GM factory document — 2000 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2005 chevrolet blazer 4wd rpo code list, p.1.

Colorado — Third generation (2023–2027)

2025–2027 Factory-verified

special equipment option (SEO); WT: O; LT, Trail Boss, Z71, ZR2: not offered

GM factory document — 2025 chevrolet colorado fleet order guide, p.56.
GM factory document — 2026 chevrolet colorado fleet order guide, p.63.
GM factory document — 2027 chevrolet colorado fleet order guide, p.61.

Express — GMT600 (1996–2002)

1998–2002 Factory-verified

GM factory document — 1998 chevrolet express rpo code list, p.1.
GM factory document — 1999 chevrolet express rpo code list, p.1.
GM factory document — 2000 chevrolet express rpo code list, p.1.
GM factory document — 2001 chevrolet express rpo code list, p.1.
GM factory document — 2002 chevrolet express rpo code list, p.1.

Express — GMT610 (2003–2027)

2023, 2025–2027 Factory-verified

O: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2025–2026), Passenger 1LS, Passenger 1LT

GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.12.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.39.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.54.
GM factory document — 2025 chevrolet express passenger fleet order guide, p.30.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.41.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.56.
GM factory document — 2026 chevrolet express passenger fleet order guide, p.32.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.39.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.28.
GM factory document — 2027 chevrolet express passenger fleet order guide, p.30.

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

2000 Factory-verified

GM factory document — 2000 chevrolet s10 pickup 4wd rpo code list, p.1.

This page aggregates every documented appearance of 8E1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.