Here's a link to a maintenance schedule. As you will see from it transmission and rear axle fluids require inspection only. If the level is correct and both fluids appear clean then there's no reason to change them as they are synthetic oils able to withstand many thousands of miles of use. That will also save you some cash as well.I'd definitely consider doing it myself if I had a good spot to work on my car- space is a little tight around here (parking spaces are $215+/month). I also don't have my lift ramps with me....this is going to be an ongoing problem. I'm thinking this work should be pretty simple (cheap) for a mechanic to do fairly quickly.