where you at skippy?
p0404 means your actual egr postion and the desired egr position are not equal, like slick said its most likley cabon deposits,
p0742 torque converter clutch (tcc) system - stuck on. pcm detected that the tcc release switch is closed when the tcc is commanded off. mil will come on, and the pcm disables shift adapts and commands tcc on at maximum capacity
harsh shift, tcc shudder on decel, tcc applied in 2nd gear and p0742 may be caused by faulty tcc pwm solenoid.
rapid fluctuation in line pressure could set dtc, inspect for pressure regulator problem or abnormal line pressure.
other problems, turbine shaft teflon sealing rings have come apart and damaged the turbine shaft and channel plate,
internal PWM TCC soleniod o-ring out of postion or damaged.
thats all my scanner says good luck,
