Tranny Oil Replacement....what a pain - moved from OBS section

[Mr T]

Folks:

Last month I wanted to DIY my 2008 Denali XL tranny. Man, I didn't realize till I got into it how difficult and messy it would be. I understand the need to pull the pan to replace the filter, but WOW it didn't want to come out unless I used a cheater bar to lower the exhaust pipe an inch. Anyone know if there is a "right" angle to get the pan in for it to drop down more easily? Secondly, has anyone installed a drain plug? What if you pull heavies all the time and you want to replace the oil more frequently? Are we really expected to pull all 17 bolts each time and then cheat the exhaust pipe? Don't forget each time you have to deal with sloshing oil. What a big mess. Thoughts?

 

[retorq]

I got a deep sump pan with a drain plug in it ... this is the obs forum, I didn't have to touch my exhaust ...

 

[Mr T]

I got a deep sump pan with a drain plug in it ... this is the obs forum, I didn't have to touch my exhaust ...

So with the deep sump pan, when you want to replace the filter, is it difficult to remove like the OEM pan is? Meaning removing the bolts is the easy part.

 

[domin8]

Interesting thought. Never considered installing a drain plug before. Actually, this seems like it would be really easy to fabricate. Unfortunately, I'm not the person to do it as I don't have skills or knowledge.

 

[ezdaar]

next time you want to change filter and fluid, do the fluid from the trans cooler in radiator.
Its extremely simple, clean and fast. allows you a no fluid spill filter change.
As far as prying down your exhaust, go easy on that as it will damage the manifold to y pipe seal.

 

[Mr T]

next time you want to change filter and fluid, do the fluid from the trans cooler in radiator.
Its extremely simple, clean and fast. allows you a no fluid spill filter change.
As far as prying down your exhaust, go easy on that as it will damage the manifold to y pipe seal.

Oh I go easy, I just don't know how to get that pan out without creating a bit of room. I wish I knew how to do it properly. Anyone got a write up on that? I can't imagine the dealers have to move the exhaust an inch or so.

 

[domin8]

next time you want to change filter and fluid, do the fluid from the trans cooler in radiator.
Its extremely simple, clean and fast. allows you a no fluid spill filter change.
As far as prying down your exhaust, go easy on that as it will damage the manifold to y pipe seal.

And, if you don't have a trans cooler???

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[Zed 71]

You guys probably know this, just dropping the pan or even using the cooler method only changes ~1/3 of the fluid. If a proper flush is never completed, deposits will accumulate on the inner part of the converter. Those deposits may then fall off and block the numerous internal passages which will affect shifting or lead to overheating the tranny.

IMO while changing the fluid frequently is beneficial for high load conditions, a proper tranny flush should be done at the recommended intervals.

Just my 2 cents.

 

[custom97]

You guys probably know this, just dropping the pan or even using the cooler method only changes ~1/3 of the fluid. If a proper flush is never completed, deposits will accumulate on the inner part of the converter. Those deposits may then fall off and block the numerous internal passages which will affect shifting or lead to overheating the tranny.

IMO while changing the fluid frequently is beneficial for high load conditions, a proper tranny flush should be done at the recommended intervals.

Just my 2 cents.

That is CORRECT. . . . . . .