As I was driving my ‘85 A/T camper, suddenly it stopped pulling in any gear.  I have never heard of such thing.  Looked at the torque converter and  it was running with the engine.  Checked the ATF and it was nice and pink and full.  Checked the linkages under the car and did not see anything amiss.  

Now, I’m wondering what it can be suddenly.  There was no funny noise before it happened.  

Any great advice?

Zoltan