Transmission Question

I have an '01 3.4L Automatic Tacoma that I recently purchased with 155k miles and I do not know if the transmission has ever been flushed, is it already too late or can I go ahead and replace the transmission fluid?
Thanks guys

 

If you aren't sure, do it. Never too late unless it's toast...

 

If you don't kno if it's ever been serviced don't touch it till you kno I've done to tranny fluid swaps on old ford's both different trucks both never serviced both blew up less than a month later

 

Don't "flush" it at an oil shop. All that does is push allllll the shit through your torque converter. Take the time in your driveway to pull the plug, drain it. Re fill it through the dipstick. Drive for ~50 miles. And do it all over over again.

That's the only REAL way to get rid of everything. Be sure to buy an extra quart of oil if you have an additional tranny cooler.

 

Ok I will give it a try thanks for your help!