Trans Flush vs. Fluid Change?

[manderson7015]

Hello everyone! Forgive me if this already posted, but i'm new here. Should i flush the trans or just drop trans fluid and refill? Would like to hear everyones comments. Own '10 Tahoe 5.3L 4x4.

 

[ezdaar]

I always do a flush via the trans cooler lines.

 

[NVNJ]

Not to hijack, but at what interval should this be done? I also have a 2010 with 68k miles.

 

[ccapehartusarmyINF.(ret)]

68k miles i wouldnt even bother

 

[JML07denali]

100k miles


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[byrds6]

Thought I read somewhere it said NOT to do a flush?

 

[JML07denali]

If you pump it out via the trans cooler lines you won't disturb any debris in your tranny. It's also much faster and not nearly as messy.


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[Wake]

I'd just do the pan or the cooler line as others have suggested. I lost a tranny once to a flush about 20 years ago when I didn't know enough about them. After the flush the trans started slipping a few thousand miles later. The flush wasn't because there was a trans problem, just that I had higher mileage and wanted to change out all the fluid.

 

[LTV Chaos]

So is this general consensus to simply do a drain? I'm coming up on my 100K mile maintenance and want to make sure I get it right.

Pete

 

[HoS]

Took mine to a local trusted guy. Dropped the pan, replaced gasket and filter.

 

[JML07denali]

In my opinion, when you drop the pan you are only replacing about 5 quartz of fluid. If I recall there is about 11-13 Quartz in the whole transmission. Seems like it would be a waste to just replace a few quartz? Just my 2 cents.


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[Wake]

In my opinion, when you drop the pan you are only replacing about 5 quartz of fluid. If I recall there is about 11-13 Quartz in the whole transmission. Seems like it would be a waste to just replace a few quartz? Just my 2 cents.

It's not a waste. While it's true you're not replacing the fluid, you're more refreshing the fluid.

I haven't found a suitable pan with a drain plug yet (don't want to spend $300 on a fancy pan) but what I ususally do is replace the pan with one that has a drain plug. Then every other oil change I'll change out the 5qts of fluid in the trans and eventually you'll have pretty fresh fluid throughout the system.

Based on my experiences with flushes when I was younger and a better understanding of why you shouldn't do it now I'll stick with the occasional 5qt change out.

 

[992dr]

It's not a waste. While it's true you're not replacing the fluid, you're more refreshing the fluid.

I haven't found a suitable pan with a drain plug yet (don't want to spend $300 on a fancy pan) but what I ususally do is replace the pan with one that has a drain plug. Then every other oil change I'll change out the 5qts of fluid in the trans and eventually you'll have pretty fresh fluid throughout the system.

Based on my experiences with flushes when I was younger and a better understanding of why you shouldn't do it now I'll stick with the occasional 5qt change out.

I agree

 

[Tehboogyman]

A 4L60 holds 11qts of fluid, if you just drop the filter and refill you've still got 7+ qts of the old fluid.

I recommend doing the flush.

 

[BADRIDES]

I'm doing mine next week and I'm doing the fluid change but substituting a quart of fluid for a quart of Lubegard.

 

[JML07denali]

The big question is why the heck didn't GM make a pan with a drain plug?


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[992dr]

The big question is why the heck didn't GM make a pan with a drain plug?


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This

 

[AZSCTACO]

It's not a waste. While it's true you're not replacing the fluid, you're more refreshing the fluid.

I haven't found a suitable pan with a drain plug yet (don't want to spend $300 on a fancy pan) but what I ususally do is replace the pan with one that has a drain plug. Then every other oil change I'll change out the 5qts of fluid in the trans and eventually you'll have pretty fresh fluid throughout the system.

Based on my experiences with flushes when I was younger and a better understanding of why you shouldn't do it now I'll stick with the occasional 5qt change out.

I bought these and is very suitable. Last time I brought my truck in for a transmission drain and fill, I had them replace it with this pan.

http://www.amazon.com/Dorman-265-81...&keywords=Dorman+265-811+Transmission+Oil+Pan

http://www.amazon.com/ACDelco-24208...d=1451321903&sr=1-1&keywords=ACDelco+24208576

 

[JML07denali]

I bought these and is very suitable. Last time I brought my truck in for a transmission drain and fill, I had them replace it with this pan.

http://www.amazon.com/Dorman-265-81...&keywords=Dorman+265-811+Transmission+Oil+Pan

http://www.amazon.com/ACDelco-24208...d=1451321903&sr=1-1&keywords=ACDelco+24208576

Yes I have seen this before. Unfortunately it doesn't fit 6.2 L.



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[TAHOEBLACKONBLACK]

Hello everyone! Forgive me if this already posted, but i'm new here. Should i flush the trans or just drop trans fluid and refill? Would like to hear everyones comments. Own '10 Tahoe 5.3L 4x4.

I change every 60,000 miles. Better safe than sorry.