If you remove the steering column covers, then you can remove the turn signal stalk. It comes as one unit with the wiper stalk. I think it's called the multi function module or something like that. My wife's 04 had the problem where the turn signal clicker would go crazy. What I did to fix it, was pull the module out, remove some of the case screws, and use a toothpick/q-tip to remove excess grease from the contacts for the turn signal. The grease had worked its way between the contacts and was shorting them. I've read it's a common issue that can be fixed for the cost of the toothpick.
I'd post a link to the write up, but I don't know if we're allowed to link to other forums.