(Adds details on holdouts, byline)

By Poornima Gupta

DETROIT, April 29 (Reuters) - Three fund management companies that have Chrysler LLC's secured debt were holding out against the automaker's proposed restructuring terms as of Wednesday afternoon, two people briefed on the closed-door negotiations said.

Oppenheimer Funds, Perella Weinberg Partners and Stairway Capital were unprepared to accept the U.S. Treasury's offer of $2 billion in cash to extinguish $6.9 billion in secured debt, said the sources, who asked to remain anonymous because they were not authorized to speak to the press.

Representatives of the three institutions could not be immediately reached for comment.

Chrysler's lenders and U.S. officials were meeting Wednesday afternoon and expected to continue discussions in a bid to win wider support for the government's offer, those briefed on the matter said.

Chrysler's main bank lenders -- JPMorgan Chase & Co (JPM.N: Quote, Profile, Research), Goldman Sachs Group Inc (GS.N: Quote, Profile, Research), Morgan Stanley (MS.N: Quote, Profile, Research) and Citigroup Inc (C.N: Quote, Profile, Research) -- have agreed to the Treasury's offer. All the banks received U.S. taxpayer money as part of the Troubled Asset Relief Program.

About 45 financial institutions hold Chrysler's secured debt and failure to win their support would send the automaker into bankruptcy, officials have said.

The three hold-outs hoping for a better deal are part of a steering committee representing Chrysler's lenders. The position of Elliott Management, the fourth fund management institution on the committee, was unclear.