03 Yukon first to second shift not right

[alc5m]

my 03 did the same thing

theres an update for the pcm i guess, guy did it while programming my gauge cluster (which he ****** up, but thats beside the point)

needless to say no jerk when it shifts from first to second anymore


it only ever happened to me when i did a slow acceleration, if i punched it, it wouldnt be so noticeable

 

[bkboatnsleds]

yeah, mine has done it for over 150k now... no issues - dealer replaced servos and all... I wouldn't worry.

 

[gitrduun]

not a big deal, its because your servos weaken over time and start to drag the shifts out. thats why when you punch it , you cannot notice it at all be cause the tranny pressure is higher. and i bet a good portion of the people that have the dragged out 1-2 upshifts, you have a very fierce 3-2 downshift