The codes are telling you something is wrong with the transmission controls. P0717 is the main culprit for harsh and erratic shifting.
I don't think flushing the system is the solution to his. You need to check out the circuit. I told you to check the connectors and have you done them? You need to do as advised to get to the bottom of the problem and that requires testing and diagbnostics.
If external testings cannot find any fault, the problem would be internal and that would require stripping the trans to rebuild etc.
August, 26, 2012 AT 7:12 PM
How is p0741 & p0700 related to the transmission sensor? Also, the transmission fluid being dirty; would that make the sensor react suddenly? And if the sensor is the issue; technically would that be considered a internally lubricated part within the transmission. If its not technically a internal lubricated mechanism/part it can't be repaired under warranty supposedly.
August, 26, 2012 AT 8:36 PM
P0700 indicates one or more faults had been detected by the PCM. P0741 is a fault with the transmission torque converter circuit and it could be triggerred by P0717.
The sensor is a electrically control unit and it could be a wiring fault which I have already told you to check the connectors. If you are not going to follow advice, there is nothing else I can do to help you.
August, 26, 2012 AT 8:39 PM
So the connectors on what, the sensors or somewhere else in the wiring
August, 26, 2012 AT 9:06 PM
At the transmission there are connectors for solenoids and sensors. Check and ensure they are clean and plugged securely. Note if there are any signs of oxidations to the terminals.