Ugh, radiator has a leak!

[amrg]

Did the '09 & '10 H3/H3T alphas come from the factory with a foam strip pad between the top of the radiator and the engine compartment to keep the radiator from wearing at the top seam caused by engine vibration/movement of the radiator? Can others take a look at their rigs and confirm? Thanks.

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I had it on my truck before I replaced the radiator under warrenty. After replacement the dealer never bothered reinstalling that foam pad again.
Had 35k miles on the truck at the time.

 

[Mb30sdl]

Just had mine replaced under warranty at Tustin. Gonna be adding that bypass to keep me from going though the same thing as Portager. Any suggestions on good coolers Zach?


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Go as big as u can, specially if you tow.

 

[05Mudiak]

Oh ours just started leaking at 55k miles

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[silvrzuki77]

I have the same foam strip on 09 T as well as my dads 09 wagon.

 

[alrock]

Thanks for the reminder - got to install that foam strip today. It was missing from my '07 even before the replacement radiator and I got the strip in a few weeks ago.

As for my cheap Chinese aftermarket radiator, it's been a bit weird. The biggest thing is that high pressure coolant was escaping from the nipple in the cap neck that goes to the overflow thank. That's supposed to be low pressure. I may have overfilled it a bit but the coolant dump isn't supposed to happen there. It leaked even after putting on a hose clamp. I also think it's a bit funny that the threads aren't engineered correctly, in that the writing on the cap is upside down when installed vs. right side up with OEM. BTW, I did try to fix the pressure issue with three different caps - original, aftermarket replacement, OEM replacement.

 

[05Mudiak]

getting ready to pull out our rad. Any tips tricks I need to know. Anything tricky or anything about the trans lines. Thanks for the info/help

 

[alrock]

getting ready to pull out our rad. Any tips tricks I need to know. Anything tricky or anything about the trans lines. Thanks for the info/help

http://www.hummer4x4offroad.com/forum/showthread.php?6236-Radiator-replacement-procedure

• Unclip transmission cooling lines (automatic trans only)
  • Pull back small black plastic cap on transmission cooling lines
  • Using a small pick or similar, remove spring clip from transmission cooling lines
  • Pull lines out of fitting. The large fitting with the nut should remain in the radiator
  • Allow transmission fluid to drain
  • Do NOT remove fitting as shown in picture. This is for illustrative purposes only. You might not be able to reattach this fitting to the trans cooler if you fully remove the fitting like in the picture below.
  • 

 

[05Mudiak]

Thank you. Funny I searched radiator and that thread didn't come up.

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