question on transmission flush

[rdharley3]

Hello all,

I have a 99 tahoe with 124k miles and a 03 suburban with 59k miles. At about 65k on the tahoe I had the transmission oil and filter/gasket changed not flushed the 03 suburban has never had the trans oil changed. The local quick lube is advertising a transmission flush which includes filter and gasket for $59.99 my question is should I have the flush on both vehicles or just on the 03 suburban, and change the oil and filter on the 99 tahoe?

Any opinions on what type of fluid/filter/gasket to use or anything else pertaining to this proceedure is greatly appreciated.


RDH

[wafrederick]

Do not have the flush done,you can do more damage than good.The flush machine uses more fluid and pushes the dirt back in.All I hear are horror stories,My father knows a guy that has his own transmission shop that cleans valve bodies because someone had their transmission flushed and the complaint is: Does not shift right.The transmission shifts fine after the valve body cleaning.I replaced one transmission because it was acting after being flushed.It was down 4 quarts and luckily moved.Just have the fluid and filter changed,that is best thing to do to an automatic transmission.