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Hi all newer owner if a 07 suburban ltz black on black. This week is the first Tim I've towed with it I think I have about 2 thousand pounds in a trailer and maybe 1 thousand in side with kids and dogs and stuff my question is how hot its it safe to run my Tran in got up to 234 on a pass and the light didn't come on and I just don't wanna run it to hot and also any tips on keeping it cool I've been using towing mode on any hilly surfaces I just don't wanna burn up the trans being stupid
 

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00silvy
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That is too hot. Look into a trans cooler. TruCool 40k is popular, I have it and like it. I don't know what size tires you have or what gears you have?
 

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get this and slow down

[ame]http://www.amazon.com/dp/B0060NKA1U/ref=pe_385040_30332200_TE_item[/ame]

If you notice ur trans heating up, slow down :read:
 

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In Valor There Is Hope
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even on the hottest days with me running around town with the truck constantly shifting I don't go past 200
 

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boogity boogity
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even on the hottest days with me running around town with the truck constantly shifting I don't go past 200
Mine as well, it has never gone above 200 but definitely floats around the 195 mark in traffic during a hot day.
 

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Dang, even lifted with 35's the highest I've ever seen mine is 181. Most days it stays at 150-160. That stock trans cooler must do better than I thought.


Sent from my iPhone using Tapatalk
 

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how hot was it out. If you're working it hard it should be 100 over the ambient.

Check your fluid.
 

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that's to hot
on a 30+c day in stop and go with my converter unlocked the hottest it gets is 190.
that's also not driving very nice
 

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That's definitely too hot. If you plan to tow with it I would look into an auxiliary trans cooler. 220 is about the max I'd want to see, 160-180 is average. Since my trucool 40k I seem to sit around 140.
 

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my 06 with a factory trans cooler has 35" nitto mud grapps pulling a 7,000 lb camper with a 1,000 lb golf cart n the bed and the absolute highest ive ever seen mine is 206° on a 97° day.


Posted from Gmfullsize.com App for Android
 

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I have a 2012 5.3, 6 speed with factory cooler...while towing my 29 ft travel trailer, the hottest I saw was 215°...I since added a Derale inline cooler and haven't seen above 175° while towing! Only cost me $75 and I found a discount coupon for Etrailer.com on a google search...worth a shot!
 

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get the tru cool max from oregon performance transmission. their best price is from the website itself. also a guy on ls1truck has brackets for the nbs and may have them for the nnbs for a seriously easy installation (mainly the fittings and such to make it a very easy process to connect to the existing trans lines)

if you have a factor trans cooler, it makes it a LOT easier to do.

my thread for installing a tru cool max on a nnbs without factory trans cooler
http://www.gmfullsize.com/forum/showthread.php?t=273361

mainly just has good pictures of where/how to mount the cooler. not so much the lines. but we just cut the existing hard lines and slipped the rubber lines over and used double clamps to make sure it holds nice and tight. if you have a hard line flaring tool, that would be ideal to insure a leak-less install
 

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Premium Member
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get the tru cool max from oregon performance transmission. their best price is from the website itself. also a guy on ls1truck has brackets for the nbs and may have them for the nnbs for a seriously easy installation (mainly the fittings and such to make it a very easy process to connect to the existing trans lines)

if you have a factor trans cooler, it makes it a LOT easier to do.

my thread for installing a tru cool max on a nnbs without factory trans cooler
http://www.gmfullsize.com/forum/showthread.php?t=273361

mainly just has good pictures of where/how to mount the cooler. not so much the lines. but we just cut the existing hard lines and slipped the rubber lines over and used double clamps to make sure it holds nice and tight. if you have a hard line flaring tool, that would be ideal to insure a leak-less install
best price was amazon, i just bought one last week. (Came from OPT)

so no leaks from just sliding the rubber hose over the oem line?

[ame]http://www.amazon.com/gp/product/B0060NKA1U[/ame]
 

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best price was amazon, i just bought one last week. (Came from OPT)

so no leaks from just sliding the rubber hose over the oem line?

http://www.amazon.com/gp/product/B0060NKA1U
ah your previous link wasn't working. nice.

and nope, no leaks. i used two hose clamps per hose and it was pretty snug when i put it on there. we checked it after a month and it was dry as can be.
 
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