PO700 and 715 error codes

I have a 99 Concorde, 2.7L with the codes PO700 and 715 in the computer. Can anyone tell me what transmission is in my car. I have been told the speedometer sensors might be bad. I can replace them for about 45 dollars. I am currently unemployed and can't afford to fix it. However, if that is a possible fix for my car, i'll take a chance on that. I need to know what transmission it is in case I have to get an ATSG manual for it.I would appreciate any help I could get. Thanks
Southern