[Oh Haha]

What I found in my recent experience was that the coupler would move as normal. I could select any of the gears using it, disconnected from the shifter linkage.

My fix was to remove the reverse light switch and push the crazy little pin back into it's home.
Once I felt it disengage the detent, the wheels moved freely.

Once your car is safely on jack stands/lift, try moving the rear wheels both in the same direction. If it's the detent, the wheels will not turn at all. Depending on if you have limited slip, they may turn in opposite direction to one another.

This is how I confirmed my problem(besides the car jumpstarting itself and driving up the tow truck but that's another post.)


BTW-I had not done anywork recently on my shifter linkage or bushings although I did notice it was difficult to select reverse once in a while.