GM to add more steel to Volt to protect battery
Will add steel to battery plates
General Motors is advising Volt owners to return their electric cars to dealers for repairs that will lower the risk of battery fires. The company hopes that the repairs, which will add steel to the plates protecting the batteries, will ease worries about the car’s safety. Three Volt batteries caught fire after government crash tests last year, prompting a federal investigation and sending GM engineers scrambling to find a fix. The free repairs, announced Thursday, will fix 8,000 Volts on U.S. roads and another 4,400 still for sale. The cars are covered by a “customer service campaign’’ run by GM, which is similar to a safety recall but allows the carmaker to avoid the bad publicity and federal monitoring that come with a recall.