LG gas dryer problem

After power outage due to ice storm and running some of the house on a generator, LG DLGX3002R gas dryer is tripping GFI outlet in laundry room. The dryer is plugged in to a non GFI outlet in the laundry room but we have a slop sink in the room so there is a GFI outlet in there also. Dryer runs fine on AIR DRY but on any of the heat settings it starts for a few seconds then trips the GFI. Do I have an ignitor problem or something else?