KL6 Factory-verified

GMC · Regular Production Option

Provisions, natural gas

Years 1997–08 Models 6 Factory citations 20

Query this via API →

Also described as Vehicle, bi-fuel gaseous fuel packageVehicle package, bi-fuel gaseous fuel

Also documented for Chevrolet

Documented applications

Savana — GMT600 (1996–2002)

2001–2002 Factory-verified

only in: CNG

GM factory document — 2001 gmc savana cng rpo code list, p.1.
GM factory document — 2002 gmc savana cng rpo code list, p.1.

Savana — GMT610 (2003–2027)

2003–2005 Factory-verified

the 2003–2005 main lists read Provisions, Natural Gas; the 2003–2005 CNG lists read Vehicle: Bi-fuel Gaseous Fuel Package

GM factory document — 2003 gmc savana rpo code list, p.1.
GM factory document — 2003 gmc savana cng rpo code list, p.1.
GM factory document — 2005 gmc savana rpo code list, p.1.
GM factory document — 2005 gmc savana cng rpo code list, p.1.

Sierra — GMT400 (1988–2000)

1997–2000 Factory-verified

the C and K pickup lists word it as natural gas provisions

GM factory document — 1997 gmc gmc c pickup 2wd cng rpo code list, p.1.
GM factory document — 1998 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 1998 gmc gmc c pickup 2wd cng rpo code list, p.1.
GM factory document — 1999 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 1999 gmc gmc c pickup 2wd cng rpo code list, p.1.
GM factory document — 2000 gmc gmc c pickup 2wd rpo code list, p.1.
GM factory document — 2000 gmc gmc c pickup 2wd cng rpo code list, p.1.

Sierra — GMT800 (1999–2007)

2001–2006 Factory-verified

2005: heavy-duty models only (GM’s HD list); the CNG/LPG supplement lists (2001–2006) word it as a bi-fuel CNG gaseous fuel package; 2001–2002, 2006 only in those lists

GM factory document — 2001 gmc gmc c sierra 2wd cng rpo code list, p.1.
GM factory document — 2006 gmc gmc c sierra 2wd cng rpo code list, p.1.

Sierra HD — GMT800 (2001–2007)

2003–2005 Factory-verified

GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2007–2008 Factory-verified

GM factory document — 2007 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2008 gmc sierra 2wd rpo code list, p.1.

This page aggregates every documented appearance of KL6 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.