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Author Topic: 2006 duramax tranny getting hot???  (Read 4052 times)

Offline trophyhunt

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2006 duramax tranny getting hot???
« on: July 05, 2022, 02:18:10 PM »
I’ve never had a problem towing my 29’ trailer before, this weekend going up chinnok pass I had to pull over and let my tranny cool down  :bash:.  Changed the fluid and filter about 40,000 ago, fluid looks and smells fine.  Looking at some YouTube videos it might be debri in my cooler.  Anyone have any ideas??  Thinking of just replacing the cooler and bottom cooler line, is that easy???  Or am I missing something ? 
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Offline Timberstalker

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Re: 2006 duramax tranny getting hot???
« Reply #1 on: July 05, 2022, 02:19:30 PM »
How hot, Jerry?  Do you have a digital readout gauge?

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Offline trophyhunt

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Re: 2006 duramax tranny getting hot???
« Reply #2 on: July 05, 2022, 02:32:28 PM »
Not digital, just the gauge on the dash, said 275-280 ish
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Offline trophyhunt

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Re: 2006 duramax tranny getting hot???
« Reply #3 on: July 05, 2022, 02:36:06 PM »
I can hear the fan kick on, which lowers the water temp but not the tranny
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Re: 2006 duramax tranny getting hot???
« Reply #4 on: July 05, 2022, 02:45:55 PM »
That's hot.  I would guess a blockage, but other's will know more.
Good luck!
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Offline trophyhunt

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Re: 2006 duramax tranny getting hot???
« Reply #5 on: July 05, 2022, 02:50:43 PM »
A blockage makes sense to me, and new stock GM coolers are only 154.00 on rockauto. It’s an easy thing to check off the list anyway, not sure how tough the job is.
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Offline Special T

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Re: 2006 duramax tranny getting hot???
« Reply #6 on: July 05, 2022, 02:54:02 PM »
Bullet proof it!
In archery we have something like the way of the superior man. When the archer misses the center of the target, he turns round and seeks for the cause of his failure in himself. 

Confucius

Offline spoonman

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Re: 2006 duramax tranny getting hot???
« Reply #7 on: July 05, 2022, 02:57:34 PM »
If you really hit 275-280 odds are that you are going to lose a seal or two at some point. At those kinda of temps auto trans tend to not last very much longer at all. Definitely sounds like a blockage or trans was not locked up! Not sure how the fluid smelled ok at those temps. The fluid is cooked for sure.

Offline Magnum_Willys

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Re: 2006 duramax tranny getting hot???
« Reply #8 on: July 05, 2022, 03:06:18 PM »
flush, blow out cooler.  I would put big cooler on but would think duramax has it ???  TruCool Max 40,000lb units are best I've found.

Offline fishngamereaper

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Re: 2006 duramax tranny getting hot???
« Reply #9 on: July 05, 2022, 03:55:59 PM »
It's an Allison should have a big cooler on it...mine did anyway.

And ya...fluid is cooked. If your gauge is accurate... normally she'll start slipping at those temps...

Flush, fluid, filter and cross your fingers

Offline Woodchuck

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Re: 2006 duramax tranny getting hot???
« Reply #10 on: July 05, 2022, 04:25:51 PM »
 :yeah:
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Offline trophyhunt

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Re: 2006 duramax tranny getting hot???
« Reply #11 on: July 05, 2022, 04:27:32 PM »
It should be a stock cooler, which I would think is a good one. but I've heard flushing is a joke??  I bet it would cost more to flush than just replace, IF i can replace it myself??  I'm going to replace the fluid and filter this weekend, then when it's empty try to pull the bottom line off and see if I can look for debris.  I sure hope it's not ruined, allison is the best is all I've heard, I hope it's tough enough to handle a little heat.  I guess if I start seeing fluid on the ground I'm screwed, maybe I can sell it to Mags or another liberal, that way I can sleep at night.   :chuckle:
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Offline Woodchuck

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Re: 2006 duramax tranny getting hot???
« Reply #12 on: July 05, 2022, 04:43:10 PM »
Dropping the pan only drops about 1/2 the fluid.
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Inuendo, wasn't he an Italian proctoligist?

Offline trophyhunt

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Re: 2006 duramax tranny getting hot???
« Reply #13 on: July 05, 2022, 04:45:43 PM »
Dropping the pan only drops about 1/2 the fluid.
it’s been a while but isn’t there a plug to drain it all? 
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Offline fishngamereaper

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Re: 2006 duramax tranny getting hot???
« Reply #14 on: July 05, 2022, 04:58:39 PM »
Dropping the pan only drops about 1/2 the fluid.
it’s been a while but isn’t there a plug to drain it all?

It won't all ever drain...lines are full. Torque conv is full...flush is the only way to expell all the old fluid....

If you mess it up I'll buy it from ya...since it's got an LBZ in it... :chuckle:

 


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