KL8 Factory-verified

Chevrolet · Regular Production Option

Conversion, natural gas (CNG)

Years 1997–08 Models 6 Factory citations 24

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Also described as Vehicle package, dedicated gaseous fuelVehicle, dedicated gaseous fuel package

Also documented for GMC

Documented applications

C/K pickup — GMT400 (1988–2000)

1997–2000 Factory-verified

only in: CNG

GM factory document — 1997 chevrolet chevy c pickup 2wd cng 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 cng 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 Conversion, Natural Gas; the 2003–2005 CNG lists read Vehicle: Dedicated 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 2001 list says propane but marks it CNG; KL7 is the propane conversion; the CNG/LPG supplement lists (2001–2006) word it as a dedicated CNG gaseous fuel package; 2002, 2006 only in those lists

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
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 — 2001 Chevrolet Silverado, p.56.
GM Heritage factory kit — 2003 Chevrolet Silverado 1500, p.46.

Silverado HD — GMT800 (2001–2007)

2001–2005 Factory-verified

the 2001 list says propane but marks it CNG; KL7 is the propane conversion; years from Heritage kit pages, not in GM’s service list of that year: 2002 (kit list)

GM factory document — 2001 chevrolet chevy c silverado 2wd rpo code list, p.1.
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.
GM Heritage factory kit — 2001 Chevrolet Silverado HD, p.62.
GM Heritage factory kit — 2002 Chevrolet Silverado HD, p.41.

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 KL8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.