Wondering if anyone has a similar experience they have solved.

If I leave the source on XM on, say, station 20, and shut off the vehicle, when I turn back on the vehicle I am on station 001. Also, my XM presets will have disappeared (as though they hadn't been set).

For all other sources behavior is what you would expect - e.g FM comes on where you left it, presets are persistent.

Anyone have something like this with their XM tuner?

Tuner is the GEX-P920XM.

Any input appreciated.

The XM Tuner is connected to ignition power instead of constant power, a fairly common mistake.

Excellent. Well, excellent that the problem is identified and has a remedy.

Not so excellent that the dash will have to come apart to get at that very well concealed XM unit.

Thanks for the quick response!