This fuel pump fits many Chevy and gmc trucks. Please cross reference the part number to make sure it will fit your vehicle . This pump is brand new never been used . COMPATIBLE WITH THE FOLLOWING VEHICLES: Chevrolet 2003 Silverado 1500 SS Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2004 Silverado 1500 WT Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2004 Silverado 1500 Z71 Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 99-2004 Silverado 1500 (submodel: Base, LS, LT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 1500 HD (submodel: LS, LT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 99-2003 Silverado 2500 (submodel: Base, LS, LT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2003 Silverado 2500 HD WT Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 2500 HD (submodel: Base, LS, LT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 Base Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 Base Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 Base Standard Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 LS Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 LS Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 LS Standard Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 LT Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Silverado 3500 LT Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors GMC 2002-2003 Sierra 1500 Denali Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002 Sierra 1500 HT Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 99-2003 Sierra 1500 SL Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2004 Sierra 1500 (submodel: Base, WT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 99-2004 Sierra 1500 (submodel: SLE, SLT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 1500 HD (submodel: SLE, SLT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2003 Sierra 2500 Base Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 99-2002 Sierra 2500 SL Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2003 Sierra 2500 WT Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 99-2003 Sierra 2500 (submodel: SLE, SLT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2003 Sierra 2500 HD Base Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2002 Sierra 2500 HD SL Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2003 Sierra 2500 HD WT Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 2500 HD (submodel: SLE, SLT) Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2003 Sierra 3500 Base Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2003 Sierra 3500 Base Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2002-2003 Sierra 3500 Base Standard Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2002 Sierra 3500 SL Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2002 Sierra 3500 SL Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2002 Sierra 3500 SL Standard Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 3500 SLE Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 3500 SLE Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 3500 SLE Standard Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 3500 SLT Crew Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors 2001-2003 Sierra 3500 SLT Extended Cab Pickup, Check Valve, EVAP Emissions Sensor Stamped TCF, Module Cover has Two Electrical Connectors