Warren Buffett's $3 billion investment in General Electric saved the industrial titan from a catastrophic meltdown, a new book reveals

• Warren Buffett's $3 billion investment in General Electric saved the company, a new book reveals.
• GE Capital faced a potential default and bankruptcy in 2008, Bill Cohan writes in "Power Failure."
• Buffett's cash and vote of confidence enabled GE to survive the financial crisis, Cohan reported.

Warren Buffett plowed $3 billion into General Electric at the height of the financial crisis — and the famed investor's support likely saved the industrial titan from melting down, author Bill Cohan reveals in his new book.