DETROIT (Reuters) - Chrysler which has over 100,000 US employees is closing it's plants for at least one month as the company does it's best to save money and sell off existing stock. Earlier in the day Chrysler LLC's finance arm has told dealers it may temporarily stop loans used by dealers to stock vehicles because the retailers pulled money from a fund that helps finance them. Chrysler Financial Chief Executive Tom Gilman sent letters to dealers, dated Dec. 12, that asked them to refrain from withdrawing large amounts from a "cash management account" used to finance the loans, a...