over the weekend i put on a crawford z plemun on my 04 g35 coupe AT. the car drove fine until yesterday when on the highway it went into safe mode and the check engine light came on. i had the car towed to the dealership, and they ran tests and came up with the following codes p1730,1774,1731 which are all trans. codes. they said that they cleared the ecu and nothing came back, so nothing was done. on my way home the some thing happend, safe mode with the check engine light. does anyone have a clue?????

 

Take it back and make them fix it! That should be warranty work.