Supernova 6331 beeping sound???

[bhplumber]

I took the SN out for the first journey on a 200 mile trip from hill city sd to hulett wy pulling my 4 door wrangler. Mostly 2 lane hiway with a few hills to go over. The trip over. The trip over went normal but on the way home I was headed down to 3rd going down a 7% grade that was about 1.5 miles long. I would occasional use the brakes to keep rpm under 3k. I hit a bump near the bottom which the bump may have just been coincidental but a beeping noise starting going off from the day. It sounded exactly like the low fuel warning beep. In a couple hundred yards after it started I was at the bottom and upshifted to drive and went maybe a few hundred yards and it went off. Then farther down the road I was going down another grade and downshifted again for maybe a mile and as I reach the bottom the beeping started again but as soon as I shifted it quite. There were no dash lights or warnings just the noise. Coolant temps were fine oil pressure was fine. All fluids are full and clean. Anyone else has this happen?? The Motorhome did great other then that the whole trip.