H2 running hot

[coach K]

I towed our camping tralier up to the mountains in NC and the transmission and engine gauge both ran just over the 210 degree mark on the gauge. Is this ok? I called my local hummer dealer to see if I could add a transmission cooler or anything that would help it run cooler and he said I was ok as the h2 has all that is needed. Any suggestions? thanks

[WHOSNEXT]

what does the trailer weigh?

[MDimitri]

Get a bigger Rad, Tranny cooler and oil cooler, make sure you seperate the oil & tranny cooler from your rad, this way each component cools itself independantly from the rad. It will save you a ton of headaches years down the road!

Cheers!

[coach K]

the camping trailer weighs 4800 pounds

[tomp]

I had the same issue towing a similar weight trailer. I added the PML tranny pan, 180 degree thermostat, and Redline Water Wetter into the radiator. I also switched oil from dino to Mobil1 Synthetic.

The above seemed to have helped a noticable amount.

Other things to consider: changing out rear diff cover to PML cover. Also, replacing transfer case fluid with synthetic ATF. Front & rear diff fluid change to better syn fluids.

I plan on swapping gears to 4.56:1, adding slotted rotors and performance brake pads

[tomp]

BTW, as others have pointed out, the H2s seem to have an issue where we are at risk of the antifreeze and ATF getting mixed together from internal leaks. Doing what I suggested above over seperating the tranny and radiator still leaves you exposed to this risk.

[Klaus]

I had the same issue towing a similar weight trailer. I added the PML tranny pan, 180 degree thermostat, and Redline Water Wetter into the radiator. I also switched oil from dino to Mobil1 Synthetic.

The above seemed to have helped a noticable amount.

Other things to consider: changing out rear diff cover to PML cover. Also, replacing transfer case fluid with synthetic ATF. Front & rear diff fluid change to better syn fluids.

I plan on swapping gears to 4.56:1, adding slotted rotors and performance brake pads

Don't forget to get an alignment! :jump:

[DRTYFN]

:jump: :jump: :jump: :jump: :jump:

[KenP]

Don't forget to get an alignment! :jump::jump: :jump: :jump:

[tomp]

Actually, I am glad you reminded me as I do happen to need another one;)


Don't forget to get an alignment! :jump:

[DennisAJC]

Don't forget to get an alignment! :jump:


OH SNAP!
:jump: :jump: :jump: :jump: