Flush transmission mileage ?

Ghost10 said:

Now I know I could get my answer from google, but would rather hear it from someone here.
2018 5.3 with 51k am I due for a tranny flush and new fluid? At my last visit for an oil change I was faced with a upsale to flush the tranny. Thing is it’s fine, park into reverse no clunking shifts smooth as butter. “Except when I want to feel like I’m in a race car and use tow haul”, all gears seem to be fine. So why fix something that ain’t broke? Where and how do I check the fluid what should o be looking for on the dipstick if there is one? I know with oil if it’s honey colored we’re good, if it’s brown it’s going down.

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CMoore711 said:

OP - Don't view the transmission maintenance as a "If it ain't broke don't fix it". It's a maintenance item, something that needs taken care of. More of a "Maintain it at the recommended intervals so that it doesn't break..."

As mentioned by others fluid exchange and filter replace.

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Ghost10 said:

So you by chance know what it cost for that kind of service? Many years ago I paid $400+ for tranny service because it needed it. After that I had transmission issues from slipping to not shifting correctly and I’m worried this is going to happen again.

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Jeff_ said:

It's really easy to do yourself.
What I've done is use a harbor freight hand pump with a tube down the trans fill tube to pump out whats in the pan.
Then, just crawl underneath and unbolt the pan. Then slap in a new filter, bolt the pan back on, and fill it back up.
(The pan doesn't come off completely, but enough that you can pop the filter out and pop a new one in).

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