Alright I'm bringing this thread back because I see lots of 3500HD campus worktrucks and it makes me want them more and more.
I found some that look the same on RockAuto but I'm not sure if they really are the same or not (because of the price). Typically these handles go for like $90 each on ebay/dealer but these ones are only $25 each and they are listed as fitting our trucks. RockAuto has the Dorman handles under the part # Chris listed (15619625) but it's $82. For less than a third of that I think it would be worth it to find out if it's a quality handle (if it's the same handle that is).
Type in these part #'s on
http://www.rockauto.com/catalog/raframecatalog.php and let me know what you think.
GM1311177
GM1310177