Engine, diesel, 6.5L V8, turbo

Years 1998–02 Models 4 Factory citations 12

Query this via API →

Also described as Engine, diesel, 8 cylinder, 6.5L, turbo

Also documented for Chevrolet Pontiac

Documented applications

Savana — GMT600 (1996–2002)

1998–2002 Factory-verified

the 2001–2002 lists add high output

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

Sierra — GMT400 (1988–2000)

1998–2000 Factory-verified

L56 prints the same wording

GM factory document — 1998 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 2000 gmc gmc c pickup 2wd rpo code list, p.1.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified

Wikipedia gives the 6.5L turbodiesel V8 (from 1994); L56 carries the same wording

GM factory document — 1998 gmc gmc suburban 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc suburban 2wd rpo code list, p.1.

Yukon — GMT400 (1992–1999)

1998–1999 Factory-verified

same wording as L56; Wikipedia gives the 6.5L turbo diesel V8 without this code

GM factory document — 1998 gmc yukon 2wd rpo code list, p.1.
GM factory document — 1999 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of L65 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.