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#4552626 - 10/24/17 06:53 AM 10 Tahoe 6L80 with Cylinder Deactivation
Speak2Mountain Offline


Registered: 04/07/17
Posts: 347
Loc: Mississippi
99.5K miles on clock, ATF never been changed.

What to do?
Drop pan and change filter and everything

Pump and replace?

No towing or off roading w/this ride.
Thx


Edited by Speak2Mountain (10/24/17 07:03 AM)

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#4552643 - 10/24/17 07:18 AM Re: 10 Tahoe 6L80 with Cylinder Deactivation [Re: Speak2Mountain]
mcrn Offline


Registered: 11/30/05
Posts: 3200
Loc: FL
I would drop pan.....replace filter.....then do drain and fills every oil change x 4.
_________________________
2012 Nissan Rogue

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#4552663 - 10/24/17 07:30 AM Re: 10 Tahoe 6L80 with Cylinder Deactivation [Re: Speak2Mountain]
JHZR2 Offline



Registered: 12/14/02
Posts: 41789
Loc: New Jersey
Id pull what I could via dipstick, replace. Do this again maybe 500 miles later. Then do a pan drop with filter change.

The logic is to get some fresh adds in there to loosen and disperse anything that may be ready to come off, and ensure that when you do the pan drop, since there was fluid in the TC, the remaining fluid will be a bit newer.

Then the fresh fluid goes in.

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#4552715 - 10/24/17 08:17 AM Re: 10 Tahoe 6L80 with Cylinder Deactivation [Re: JHZR2]
Speak2Mountain Offline


Registered: 04/07/17
Posts: 347
Loc: Mississippi
Thx guys, this is VERY interesting.

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#4552815 - 10/24/17 09:37 AM Re: 10 Tahoe 6L80 with Cylinder Deactivation [Re: Speak2Mountain]
oldoak2000 Offline


Registered: 07/23/14
Posts: 119
Loc: North TEXAS
Originally Posted By: Speak2Mountain
99.5K miles on clock, ATF never been changed.

What to do?
Drop pan and change filter and everything

Pump and replace?

No towing or off roading w/this ride.
Thx


IF it's a 2010 factory fill was a full-syn fluid; 99.5k is nothing.
Drain/drop pan; new filter, and re-fill with a quality full-syn Tfluid (MAXLIFE). Do again every 100k.

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