The Treasury Department Tuesday released a report confirming its $7.5 billion aid to GMAC that was announced last week.

The Treasury report updated its automotive industry financing program and showed the additional aid, in the form of mandatory convertible preferred shares.

GMAC is the auto finance arm of General Motors (GM). Aside from the $7.5 billion announced Thursday, Treasury in December provided GMAC with $5 billion in assistance through the Troubled Asset Relief Program, a $700 billion bailout package approved by Congress last fall.

-By Jeff Bater, Dow Jones Newswires; 202 862 9249; jeff.bater@dowjones.com