TOPSCOPE FP3501M - Fuel Pump Assembly E3501M for 1999-2003 Chevrolet Chevy Silverado 1500(HD), 2500(HD), 3500, 1999-2003 GMC Sierra 1500(HD), 2500(HD), 3500(1 Electrical Connector) This is a high quality, brand new aftermarket replacement Fuel Pump Module Assembly. it's a direct OE replacement that you can use inside your vehicle without any modifications. Please check the Year/Make/Model drop down menu at the top or Product Description to make sure this part fits your vehicle Replacement for: MU1090, MU1333, MU1517, MU1614, E3501M, 67429, 67443, P75014M, P75017M, FG0039, FG0271, 19121627, 19153712, 25314655, 25345028 Application :1999 2000 2001 2002 2003 Chevrolet Chevy Silverado 1500 HD , 2500 HD, 3500, GMC Sierra 1500 HD , 2500 HD, 3500 and more 1-YEAR / 365-DAY UNLIMITED MILEAGE WARRANTY CHEVROLET SILVERADO 1500 03-99 CHEVROLET SILVERADO 2500 03-99 CHEVROLET SILVERADO 2500HD 03-01 CHEVROLET SILVERADO 3500 03-01 GMC SIERRA 1500 03-99 GMC SIERRA 2500 00-99 GMC SIERRA 2500HD 03-01 GMC SIERRA 3500 03-01 Vehicle makes high pitched sound when the engine is first engaged; Sudden trouble accelerating; Low fuel pressure. Always keep enough fuel in the tank for the pump to be submerged in gas;