[Stonecoldchavez]

One of the bulbs is burned out.

I would also check for a short or misconnection somewhere.

This happened on my truck once; the turnsignal in the truck did not flash and the bulb was out.

Also, after my low-side last fall, and I lost my front turn signal, the turnsignal light stayed on and my rear turnsignal did not blink either.

Stone