can you upgrade from a standard climate control to the digital? What are the steps? Is as easy as replacing just the unit?

Nope, not reasonable. It could be done for about 7 grand, yes $7000, so you are much better off getting a TB with the digital controls from the factory. Sorry to have to break the news to ya.

Nope, not reasonable. It could be done for about 7 grand, yes $7000, so you are much better off getting a TB with the digital controls from the factory. Sorry to have to break the news to ya.

WOW

not that I want to switch it out for the auto-climate... but why so much money?

Not only the complexity and the expense, but was problematic in it's operation.

It costs so much because basically then entire AC system has to be rewired and a lot of other things that I dont know about. I heard about it on another forum, and it has been asked a lot so you arent the only one who wanted to do this.