KL6 Factory-verified

Chevrolet · Regular Production Option

Provisions, natural gas

Years 1995, 1997–08 Models 8 Factory citations 27

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Also described as Natural gas (CNG bi-fuel) provisionsVehicle package, bi-fuel gaseous fuelVehicle, bi-fuel gaseous fuel package

Also documented for GMC

Documented applications

Caprice — fourth generation, B-body (1991–1996)

1995 Factory-verified

the 1995 wagon sheet prints KLG and the 1996 sheet KLE

GM Heritage factory kit — 1995 Chevrolet Caprice, p.114.

Cavalier — third generation (1995–2005)

1998–2004 Factory-verified

only in: CNG bi-fuel cars; sedan with MX1 and C60 (1999)

GM factory document — 1998 chevrolet cavalier cng rpo code list, p.1.
GM factory document — 2004 chevrolet cavalier rpo code list, p.1.
GM Heritage factory kit — 1999 Chevrolet Cavalier, p.14.
GM Heritage factory kit — 2004 Chevrolet Cavalier, p.20.

C/K pickup — GMT400 (1988–2000)

1997–2000 Factory-verified

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

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

Express — GMT600 (1996–2002)

2001–2002 Factory-verified

only in: CNG

GM factory document — 2001 chevrolet express cng rpo code list, p.1.
GM factory document — 2002 chevrolet express cng rpo code list, p.1.

Express — 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 chevrolet express rpo code list, p.1.
GM factory document — 2004 chevrolet express awd rpo code list, p.1.
GM factory document — 2005 chevrolet express rpo code list, p.1.

Silverado — 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 — 2003 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet chevy c silverado 2wd cng rpo code list, p.1.
GM factory document — 2006 chevrolet chevy k silverado 4wd cng rpo code list, p.1.
GM Heritage factory kit — 2003 Chevrolet Silverado 1500, p.46.

Silverado HD — GMT800 (2001–2007)

2003–2005 Factory-verified

GM factory document — 2003 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy c silverado 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014)

2007–2008 Factory-verified

GM factory document — 2007 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet silverado 2wd rpo code list, p.1.

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