The criminal investigation that opened yesterday into GM's handling of an ignition flaw could threaten the company's turnaround, as well as the ability of new CEO Mary Barra to shift the former "Government Motors" into high gear. The ignition problem has been linked to 13 deaths and could mean years of bad publicity due to a potential slew of Justice Department inquiries, lawsuits and government fines. TheStreet's Jim Cramer says the problem is a headline risk, but also a buying opportunity.

Disclosure: TheStreet's editorial policy prohibits staff editors and reporters from holding positions in any individual stocks.

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