'05 won't downshift
I'm having some problems with my '05 auto with the 6.0 not downshifting when it should.
If I'm cruising in low rpm with the torque converter locked up, then go up a hill, the transmission will not always want to downshift with the increased throttle. This can cause the engine to start to miss. The only way to get it to downshift or unlock the torque converter is to completely let off the throttle and then bring it back up.
Is there a fix for this? The truck is stock other than a small lift and 35s.



