Engine, 4.3 L V6, CPI

Years 1998–00 Models 2 Factory citations 6

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Also documented for Chevrolet

Documented applications

Jimmy — second generation (1995–2001)

1998–2000 Factory-verified

2000 list adds gas, 6 cylinder and 90 degree; the 1998–1999 wording matches L35

GM factory document — 1998 gmc jimmy 4wd rpo code list, p.1.
GM factory document — 1999 gmc jimmy 4wd rpo code list, p.1.
GM factory document — 2000 gmc jimmy 4wd rpo code list, p.1.

Sonoma — second generation (1994–2004)

1998–2000 Factory-verified

2000 list adds gas, 6 cylinder and 90 degree; the 1998–1999 wording matches L35 (1998–1999 lists)

GM factory document — 1998 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 1999 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2000 gmc sonoma pickup 4wd rpo code list, p.1.

This page aggregates every documented appearance of LF6 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.