Those of you towing with a 2001-2004 duramax, may be interested in this auction on ebay. http://cgi.ebay.com/ebaymotors/ws/eBayISAP...:MESE:IT........ I removed from my 2001 model thinking I could use on new 05 model, but nope. 2004 1/2 and up changed systems.
david
david