Fuel filler neck leaking? This replacement fuel filler neck is precision-engineered and thoroughly tested to match the original filler neck for specific vehicle years, makes and models for a reliable repair. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Silverado 1500 HD: 2001, 2002, 2003] - [Chevrolet Silverado 1500: 1999, 2000, 2001, 2002, 2003, 2004] - [Chevrolet Silverado 2500 HD: 2001, 2002, 2003] - [Chevrolet Silverado 2500: 1999, 2000, 2001, 2002, 2003] - [Chevrolet Silverado 3500: 2001, 2002, 2003] - [GMC Sierra 1500 HD: 2001, 2002, 2003] - [GMC Sierra 1500: 1999, 2000, 2001, 2002, 2003, 2004] - [GMC Sierra 2500 HD: 2001, 2002, 2003] - [GMC Sierra 2500: 1999, 2000, 2001, 2002] - [GMC Sierra 3500: 2001, 2002, 2003]