Changing Transmission Filter (First Time Ever)

[mikeyss]

Change your fluid and filter, but as others have said... Don't flush it. I definitely would NOT just ignore it though, ignoring it will just make it fail quicker.

 

[Larryjb]

Changing fluid and filter only will change out only half the fluid, so it won't be a "shock" to the transmission.

If it fails after a pan drop, it was probably about to fail anyway.

 

[lumberjack890]

Imo changing the filter and replacing the fluid is exactly what you should do. Just don’t flush it.

Ok. Thank you

 

[79jasper]

it was probably about to fail anyway.

That's how I feel about a flush.

Sent from my SM-N960U using Tapatalk

 

[trailblazer]

You guys are hilarious. The transmission is a hydraulic system. Clean fluid is extremely important. The correct advice is “don’t BACK flush or POWER flush”. You aren’t going to shock anything by letting it pump out the fluid at its own speed.

Nothing wrong with dropping the pan, replacing the filter, cleaning the magnet, replacing the pan, fill four quarts Dexron VI, temporarily install a Hayden 397 brass nipple adapter on the upper right side of the radiator with clear vinyl hose that goes into a bucket or drain pain, start engine, while the engine is running slowly add fluid until the fluid in the clear vinyl hose is clean cherry red.

Gallon jugs of genuine ACDelco Dex 6 are like $15-17 from Tasca parts.

 

[lumberjack890]

You guys are hilarious. The transmission is a hydraulic system. Clean fluid is extremely important. The correct advice is “don’t BACK flush or POWER flush”. You aren’t going to shock anything by letting it pump out the fluid at its own speed.

Nothing wrong with dropping the pan, replacing the filter, cleaning the magnet, replacing the pan, fill four quarts Dexron VI, temporarily install a Hayden 397 brass nipple adapter on the upper right side of the radiator with clear vinyl hose that goes into a bucket or drain pain, start engine, while the engine is running slowly add fluid until the fluid in the clear vinyl hose is clean cherry red.

Gallon jugs of genuine ACDelco Dex 6 are like $15-17 from Tasca parts.

Thank You! I really appreciate the detailed answer

 

[latvius]

You guys are hilarious. The transmission is a hydraulic system. Clean fluid is extremely important. The correct advice is “don’t BACK flush or POWER flush”. You aren’t going to shock anything by letting it pump out the fluid at its own speed.

Nothing wrong with dropping the pan, replacing the filter, cleaning the magnet, replacing the pan, fill four quarts Dexron VI, temporarily install a Hayden 397 brass nipple adapter on the upper right side of the radiator with clear vinyl hose that goes into a bucket or drain pain, start engine, while the engine is running slowly add fluid until the fluid in the clear vinyl hose is clean cherry red.

Gallon jugs of genuine ACDelco Dex 6 are like $15-17 from Tasca parts.

This x100, don't buy into the voodoo stories of some guy somewhere changed his fluid and his transmission broke because surely those two things are related.

 

[Kent Kimberlin]

Yukon has 287k on it. Not the original owner. Is it safe to change the filter on the transmission and refill it with new fluid?

I know flushing it is a no go at this point


2001 GMC Yukon 5.3 V8

I have 298k on 2002 Tahoe LT. 5.3 V8. I have never changed the fluid or filter. I am the original owner. I must have a purple unicorn

 

[new2yukon]

You guys are hilarious. The transmission is a hydraulic system. Clean fluid is extremely important. The correct advice is “don’t BACK flush or POWER flush”. You aren’t going to shock anything by letting it pump out the fluid at its own speed.

Nothing wrong with dropping the pan, replacing the filter, cleaning the magnet, replacing the pan, fill four quarts Dexron VI, temporarily install a Hayden 397 brass nipple adapter on the upper right side of the radiator with clear vinyl hose that goes into a bucket or drain pain, start engine, while the engine is running slowly add fluid until the fluid in the clear vinyl hose is clean cherry red.

Gallon jugs of genuine ACDelco Dex 6 are like $15-17 from Tasca parts.

So atf exits top port of rad? And wouldn't it exit so fast you couldn't fill fast enough to keep up?

I did similar process on a caravan and I had the return hose in a bucket and there was no way I could run engine longer than 5-7 sec or so and had to top off. Fluid flowed fast.

 

[latvius]

So atf exits top port of rad? And wouldn't it exit so fast you couldn't fill fast enough to keep up?

I did similar process on a caravan and I had the return hose in a bucket and there was no way I could run engine longer than 5-7 sec or so and had to top off. Fluid flowed fast.

Just google it, there is a step by step thread out there, you basically run the engine until bubbles start to appear in the hose then shut off and add more fluid. You keep doing that until the fluid runs red like new.