HELP our (Duramax/alison transmission getting hot

DZLHUMMR

New member
Jan 3, 2009
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Runs "normal temps" except when I go up steep hills. then gets up to 225. could it be slipage?
 
Last edited:

WanaDmaxsub

Junior Member W/gray hair
Feb 17, 2007
644
1
18
Is the TC locking? When the TC locks in High gear you should beable to feel it or see it on the tach.
If going up a hill, below high gear lock-up speed, then try it in T/H.

That might give you a better indication of what is going on.

If it was me...I would get it to MikeL.
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
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Fullerton CA
The H2 is a whole different animals guys when it come to trans cooling. Untill I see how the cooler and fan setup is I will comment. Remember this is a transplant.