2、Interchange Part Number: GM250222, GM2503224, 10396913, 15199557, 2503224, 2502224, 2521185, 2520185. 1、Applicability: Compatible with 2003-2006 Chevy Avalanche 1500 2500 /Fit 03-06 Chevy Silverado 1500 2500 3500 /Fit 03-06 Chevy Silverado 1500 HD 2500 HD.