Just like American International Group (AIG - Get Report), membership in the Dow may depend on the kind of deal it strikes with the government, said John Prestbo, editor and executive director of Dow Jones Indexes.
"We took out AIG because the government took a big stake in that company, and now GM has its hand out and we'll be taking a close look at what form it takes," Prestbo said. "If it comes at all, then we'll look at replacing GM."
Chrysler got the boot in 1979, when it faced its bankruptcy days. So, the writing is on the wall for GM, which has said it doesn't have enough cash to last another year.That means that all the ETF's and index funds pegged to the DJIA will need to change accordingly, putting GM in a potential death spiral.