Express 2005 2006 2007 Engine Computer ECM PCM 12589462 Programmed to your VIN #

Silverado 2005 2006 Engine Computer PCM ECM 12589463 - Requires GM Programming

GM PCM 2005 2006 2007 Engine Computer ECM PCM 12602801 - Requires GM programming

Savana 2007 2006 2005 Engine Computer ECM PCM 12602801 Programmed to your VIN #

2005 2006 Sierra 4.3L Engine computer 12589462 "Programmed to your VIN" ECM PCM

Sierra 2005 2006 4.3L Engine Computer ECM PCM 12589462 Programmed to your VIN #

Silverado 2005 2006 07 Engine Computer ECM PCM 12589462 Programmed to your VIN

2007 - 2009 Engine Computer ECM PCM 12607096 - Requires programming to your VIN