Originally Posted by blueribb
gear 2 to 3 shifting for the first mile or so. It winds up to a much higher rpm before shifting. After about a mile, it's normal again. It's been doing this for years but is more noticeable now.
The longer shift when cold is by design. The PCM reads the thermistor in the gov pressure sensor and adjusts the shift pattern so that the tranny warms up faster.
Both symptoms could the indicate the fluid needs changing or any of the things newfie mentioned.
So my advise is to change the fluid and adjust shift cable. Check the materiel in the pan. Some powdered brass and clutch materiel are normal. Aluminum and big chunks are not. If the pan materiel looks normal, adjust the bands.