My trans when cold will not shift out of 1st gear at WOT until it seems like the motor is going to blow. When the engin gets warm and the tranny is warm it will shift a little faster. The tranny also shifts trough the gears faster than normal. Even though the TCC is set up not to go in lock-up on the chip until 49mph it may be in 4th locked up at 35-40 causing the engin to bog down. Dose this mean it is time to rebuild? Thanks Tracy
