I think they are trying to sell you $224 worth of GM stock for $1000.
"As an owner of GPM - I received a book about GM restructuring that was sent to me from Ameritrade. They are asking preferred noteholders to exchange - for every $1,000 of principal amount (cost of GPM) - you will receive 225 shares of common stock. This puts the common stock at $4.44 per share - upon reading this - I loaded up today at $1.04"