Cooling system, transmission oil, internal

Years 1998–10, 2014–18, 2022–26 Models 2 Factory citations 15

Query this via API →

Also described as Cooling system, transmission oil

Also documented for Cadillac Chevrolet

Documented applications

Savana — GMT600 (1996–2002)

1998–2002 Factory-verified

the 2001–2002 lists read "Cooling System Trans, Oil"

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.

Savana — GMT610 (2003–2027)

2003–2010, 2014–2018, 2022–2026 Factory-verified

GM factory document — 2003 gmc savana rpo code list, p.1.
GM factory document — 2008 gmc savana rpo code list, p.1.
GM factory document — 2008 chevrolet ld electricalfullsizevans, p.17.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.15.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.15.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.7.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.16.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.13.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.

This page aggregates every documented appearance of KD1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.