THE P0700 CODE IS JUST SAYING THE CHECK ENGINE LIGHT IS ON.
THE P2706 IS A CODE FOR THE MULTI-SELECT SOLENOID , SAYING IT HAS AN OPEN CIRCUIT. the MS solenoid serves primarily to provide 2nd and 3rd gear limp-in operation.
POSIBLE CAUSES ARE
IF THIS HAS HELPED PLEASE SELECT ACCEPT
the diagnosis for this is extremely long and tedious so i would just check around the trans for loose connectors or frayed wires. the most common failure is the solenoid.
when i get to work today i will send you some procedures on the diag and repair process. but if you dont have a multi meter the diag will be almost impossible.
NOTE: The valve body can be removed for service without having to remove the transmission assembly. The valve body can be disassembled for cleaning and inspection of the individual components.