In June 2017, months after General Motors Co. beat Tesla Inc. to market with an affordable, long-range electric vehicle, it took out full-page newspaper ads touting how long its Chevrolet Bolt could travel between charges. The tagline: "Begin a long-distance relationship, now.”

Four years later, the long-distance relationship between GM and its battery partner, LG Energy Solution, is being tested like never before. At issue: who will pick up a roughly $1 billion tab.

GM last week recalled Bolt EVs for the third time in nine months because of the risk their batteries could catch fire. The Detroit-based company will replace modules in more than 73,000 additional vehicles and said it’s trying to get LG to pay for the fix. LG, headquartered some 6,600 miles away in Seoul, said the expense will be divvied up depending on the results from a joint investigation into the root cause of the problem.