Originally Posted by BigThirsty
Nope. 2004 is the bastard child of transmissions. Go to a dealer and have them flash your PCM and TCM to the latest program. I just did it and it made a significant change in the shift points and firmness and was way less than a tuner.
But then my truck is for towing and most you will find on here is not doing it for the same reasons.
Ha! You called a 2004 a bastard child, always thought that was us 03's....
Doesn't the flashpaq adjust for 04's?