Tranny Fluid change at 123K Miles? - TerrainForum.net: GMC Terrain Forum
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post #1 of 13 (permalink) Old 11-28-2019, 11:43 AM Thread Starter
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Tranny Fluid change at 123K Miles?

My better instincts says don't do it. My curiosity says do it. I know some of the fluid has been replaced when a tranny cooler line rotted out and had to be replaced. Thoughts?


2010 V6 LTZ
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post #2 of 13 (permalink) Old 11-28-2019, 11:47 AM
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LMAO ,

I cant wait for the responses

me : DO IT !!!!!
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post #3 of 13 (permalink) Old 11-28-2019, 12:17 PM Thread Starter
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LMAO ,

I cant wait for the responses

me : DO IT !!!!!

LOL!!! Yea, I'm so tempted......it shifts nice still too.....
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post #4 of 13 (permalink) Old 11-28-2019, 07:13 PM
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You're thinking back in the old days. With modern fluids you'd be right on target for a >needed< filter and change.
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post #5 of 13 (permalink) Old 11-29-2019, 10:43 AM
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What does the fluid look, smell like? You have a trans stick right?

Shouldn't be an issue...I might hesitate if the fluid smells burnt or the fluid is real dark color and even than the boat has sailed, so why bother?

I'd be happy to have paid more to have a stick in my 19

Greg



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post #6 of 13 (permalink) Old 11-29-2019, 11:54 AM
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To me it would depend how long you are going to keep it.
If you are going to sell or trade it in the next 6 months to a year, let it be.
If you want to keep it longer, I would do a couple of drain and refills.
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post #7 of 13 (permalink) Old 11-29-2019, 12:20 PM
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Do it . The 4-5 qts that come out on a plug pull is worth it. No matter if your gonna sell it or keep it a functioning trans. is what matters. It's only a partial drain and if the trans. was gonna blow it was any going to anyway.
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post #8 of 13 (permalink) Old 12-03-2019, 01:11 AM
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Originally Posted by mrgto455 View Post
My better instincts says don't do it. My curiosity says do it. I know some of the fluid has been replaced when a tranny cooler line rotted out and had to be replaced. Thoughts?


2010 V6 LTZ
Go get a full fluid exchange at the dealer or transmission shop and not worry about it. If you are worried, do an oil analysis of the fluid. Costs about $25 and check again at 10K.
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post #9 of 13 (permalink) Old 12-07-2019, 05:31 PM Thread Starter
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So yesterday I checked the fluid. It's still pink, doesn't stink, and was full. So I decided to leave it be. I know i lost some fluid some years ago when one of the cooling lines rotted out. I know they replaced some fluid. So I go to pick up the wife yesterday and sure as **** the trans felt like it slipped a bit. Then it did it again today. Not horrible but it was noticeable. Hopefully it's nothing but we'll see I guess. Anyone ever put in an additive to their transmission?
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post #10 of 13 (permalink) Old 12-08-2019, 04:40 PM
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Originally Posted by mrgto455 View Post
So yesterday I checked the fluid. It's still pink, doesn't stink, and was full. So I decided to leave it be. I know i lost some fluid some years ago when one of the cooling lines rotted out. I know they replaced some fluid. So I go to pick up the wife yesterday and sure as **** the trans felt like it slipped a bit. Then it did it again today. Not horrible but it was noticeable. Hopefully it's nothing but we'll see I guess. Anyone ever put in an additive to their transmission?
Rather than additive, I would recommend drain and fill.
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