05 transmission.. To FLUSH or not to FLUSH?

so i just hit a little over 60,000 i have an 05 dc v6 automatic trans truck.. ive been reading a ton of threads on changing the transmission fluid.. or flushing it.. Iam not sure if its me or if the truck is shifting a bift rough these days.. at high speeds it shifts smoothly and when its warm and i have driven it part of the day it also shifts better.. it mostly happens in the morning when its cold or i havent driven it..

some other info.. i believe the previouse owner did some but not a lot of towing but he also took care of the truck and had it serviced on schedule. (old mature rich guy type, nice person) i dont do any towing or offroading..

so the question is should i service the trans fluid.. DIY drain and fill (ive practicly memorized that thread).. have the stealership do a flush on it.. or have the stealership do just a drain and fill and see if the shifting improves... i have also heard that if you disconnect the battery for a bit it resents the comp and the shifting habits..and does servicing it really change the feel of the shifting and stuff? like smoother shifting..? so what do you guys think.. sorry iam a noob and the one person i would ask (my dad) isnt near me.. and after reading countless threads iam more confused than anything.. drain and fill flush 100,000 or 60,000

 

It's just like any other peice of machinery that uses fluid. The fluid breaks down, especially from heat, and needs replacing. Considering you only replace a portion of the fluid when you drain, cooler and torque converter hold a few quarts, it's best to do it when recomended. Do it more often while towing.
Heat kills transmission fluid, then it kills your transmission.

I forgot to add:
Some shops will do a "transfusion". They take off the trans cooler lines, draw out the old, while pushing in new fluid. This purges the cooler and flushes the torque converter. It is better than a drain and fill, but not necessary if you stick with the regular service intervals.

 

it runs around what 200 bucks at the stealership?

 

just turned 100000 on mine and havent done mine yet guess its time

 

Keep an eye out for large metal flakes. Small ones are ok, so is the metal sludge. If your fluid smells burnt or is dark or brown, change it more often.