Welcome!

Starting with the easiest, have you driven it backwards enough to give it a full chance to disengage?

If you have, and you are sure that they are engaged, then the next step would be to pull the hubs and clean and regrease them. It's not the hardest thing to do. One important part will be to get an 8mm socketed hex hey. The hub bolts will likely be rather stuck and you will need the leverage of a breaker bar to crack them. Also be sure to give them a good dose of PB Blaster before had. Maybe even a day ahead, with a couple more in between. This is may not be too critical for TX, but here in the rust belt... The last thing you want is to round out the inside of the hex cap. <img src="/forums/images/graemlins/scared.gif" alt="" />


Edit: There is also this thing called the pulse damper (?) on the t-case. I don't think it would affect the engagement of the hubs though. And if in the end it turns out the hubs are toast, go with manuals.