For 2001-2012 Chevrolet Silverado 2500 HD Relay API 42657DKSB 2008 2002 2003

For 2001-2012 Chevrolet Silverado 2500 HD Relay API 89434PZSW 2007 2003 2005

API SERVICE TECH Relay fits Chevy Silverado 2500 HD 2001-2012 18SPKH

API 48JC25V Relay Fits 2001-2007 Chevy Silverado 2500 HD

API 26JY96C Relay Fits 2007 Chevy Silverado 2500 HD Classic

For 2007 Chevrolet Silverado 2500 HD Classic Relay API 86714NCVX

For 2007 Chevrolet Silverado 2500 HD Classic Relay API 42283XMMG

API 23SW35N Relay Fits 2001-2002, 2004-2013 Chevy Silverado 2500 HD