Now it doesn't. We ran power to the charger and charged the battery, the battery shows a full charge but the Hyster gauge shows a CODE -16 which according to the book means the battery is overcharged but when the battery level is checked it shows 47.3 volts.

Anyway, we can't get a peep out of the thing. Has some kind of sensor defaulted or another kind of anomaly taken place. We are in a small town and the Chevy mechanic has no idea. Our yellowed manual mentions a PMT circuit and a SRO circuit but does not explain either one. HELP! Would appreciate the brilliance of someone. Thank you.