Don't go scaring people like that!Haven't changed coolant yet? If not you're probably due with your 2013. My 2013 build date was October 2012 so I had to get it done recently. If over 90k miles you're probably due for a transmission fluid drain and fill too.
Engine coolant 5 years or 150,000 miles
Transmission Fluid 97,500 miles (45,000 under SEVERE conditions but few Volts will fall under that category)
Still got another year on my 2013 coolant and plenty of time for the transmission fluid.