I'm not sure which trans it is......It's an '05 with HD trans and locking rear end. It also has the tow button on the column with a trans temp gauge. Hope that helps with the ID.
I'm thinking I'm taking this to the dealer for the major service.....as I'm tired of having to watch the Jiffy lube tweekers and this is a serious service. I am just wondering how much I'll need to budget for.