Seems that my left channel on the AUX circuit is out. Have sound from speakers on both sides in TUNER. AUX worked on all speakers a few days ago.

Any ideas before I begin planning a 2 hr trip to the dealer?

 

You should check it's not the device you're listening to or the cable from it to the AUX plug ... if you can, get another device & cable to try.

 

Agree. The device, an iPod, is putting out both channels. Earphones pick up both fine. I will try another cable soon. Or, it may be that the cable got pulled and has done something to the aux port. I don't have the fancy iPod installation, just the aux port.