P0700 Trans Control Sys Malfunction = useless code from the PCM basically saying "Hey there's something wrong with the tranny" so that's out
P0748 Pres Ctrl Sola. Circuit Electrical = switch on the tranny is shorting out basically.
P0700 Pending trans control system malfunction = see above.
I really wish people would look on the KGIS site for information about their cars. It's REALLY helpful to know what your dealing with.
Though as the guy above said if it's under 100K then you can take it to the dealer and get it repaired FREE. It is under the powertrain warranty.