WASHINGTON (Reuters) – General Motors Co (NYSE:) on Wednesday recommended that Chevrolet Bolt electric vehicle owners parking in decks do so on the top floor or on an open level, at least 50 feet away from other vehicles, citing potential fire risks.

A company spokesperson stated in an email that the precaution “would reduce potential damage to structures or nearby vehicles in case of a possible fire.” He added that GM had sent a notice about parking problems to customers who had asked.

GM previously requested that owners park Bolt vehicles outside, away from structures and not charge them over the night.

GM also advised owners that Bolt EVs should not be left charging in an unattended place, even if they were using a station on a parking lot. Bloomberg News first reported on the suggestion.

GM increased its Bolt recall from 140,000 to over 140,000 to replace the battery modules in August. This was after 10 reports about fires. According to GM’s battery supplier LG, the automaker will seek reimbursement.

The largest U.S. automaker announced last week that it would prolong the shutdown at a Michigan plant for two more weeks due to the Bolt recall.

GM stated that the Orion Assembly plant’s production halt, which will continue through Sept. 24, was extended because of a “battery pack shortage” due to the recall.

GM said it will stop Bolt sales and production until the recall solution is in place.