Read If Your H3 Radiator Has Cracked or Leaked
#401
06-05-2013, 04:03 PM
#402
06-12-2013, 08:19 AM
replaced the radiator
Here's the problem folks. This is if you own a 2006 or 2007 h3 hummer. DO NOT REPLACE THE LEAKING RADIATOR. I replaced my leaking radiator with OEM acdelco radiator and put on a new thermostat. Magically, after replacing the radiator and thermostat, the vehicle runs at 3/4 temperature and fluctuates when you idle to even hotter! My truck NEVER went past 1/2 on the gauge (about 210 degrees). I spent thousands on rental cars and replacing every single part of the cooling system, to NO AVAIL. I took it to GM on a last ditch effort, hoping they could diagnose the problem. It spent 2 nights at GM, when they called me and said "Oh H3 hummers do that. After you repair the cooling system they now run at 3/4's, and thats normal".....I said WHAT!!!!! Are you kidding me? The truck now runs almost 40 degrees hotter. It runs at 240 degrees which is "within spec" they say. But it fluctuates and there's absolutely NO telling how hot it will get. I've had to even pull over from it over heating, and the AC actually turned itself off and warning lights flashed.
GM's only answer was "Hummers do this when you repair the cooling system" then they gave me a sheet of paper that said "The vehicle running at 3/4's shouldn't be cause for concern and no repairs should be made" Okay great, it does run at 3/4's, but will it ever get any hotter? What will this now do to the life of my engine? I'm burning oil now, is that because it's hotter?
Last side of the issue- GM Fountain (in Orlando) They are absolute idiots. They antagonize, they want to argue with you, they try to talk to you like your stupid, yet they are complete morons. GM has a MAJOR problem here, and they refuse to do ANYTHING about it, so the service department has to tiptoe around their words and try to do anything to get you to leave before you ask to many questions. My truck ran at 203, it now runs at 240, that's GOT TO BE damaging something.
GM's only answer was "Hummers do this when you repair the cooling system" then they gave me a sheet of paper that said "The vehicle running at 3/4's shouldn't be cause for concern and no repairs should be made" Okay great, it does run at 3/4's, but will it ever get any hotter? What will this now do to the life of my engine? I'm burning oil now, is that because it's hotter?
Last side of the issue- GM Fountain (in Orlando) They are absolute idiots. They antagonize, they want to argue with you, they try to talk to you like your stupid, yet they are complete morons. GM has a MAJOR problem here, and they refuse to do ANYTHING about it, so the service department has to tiptoe around their words and try to do anything to get you to leave before you ask to many questions. My truck ran at 203, it now runs at 240, that's GOT TO BE damaging something.
#403
06-13-2013, 07:40 AM
Sounds to me it either has a blown head gasket, or air pocket in the cooling system.... Any decent shop should have a test kit for checking for the hydrocarbons in the coolant indicating a blown head.... I know pep boys does ... Hope this helps
#404
06-17-2013, 05:32 PM
Here's the problem folks. This is if you own a 2006 or 2007 h3 hummer. DO NOT REPLACE THE LEAKING RADIATOR. I replaced my leaking radiator with OEM acdelco radiator and put on a new thermostat. Magically, after replacing the radiator and thermostat, the vehicle runs at 3/4 temperature and fluctuates when you idle to even hotter! My truck NEVER went past 1/2 on the gauge (about 210 degrees). I spent thousands on rental cars and replacing every single part of the cooling system, to NO AVAIL. I took it to GM on a last ditch effort, hoping they could diagnose the problem. It spent 2 nights at GM, when they called me and said "Oh H3 hummers do that. After you repair the cooling system they now run at 3/4's, and thats normal".....I said WHAT!!!!! Are you kidding me? The truck now runs almost 40 degrees hotter. It runs at 240 degrees which is "within spec" they say. But it fluctuates and there's absolutely NO telling how hot it will get. I've had to even pull over from it over heating, and the AC actually turned itself off and warning lights flashed.
GM's only answer was "Hummers do this when you repair the cooling system" then they gave me a sheet of paper that said "The vehicle running at 3/4's shouldn't be cause for concern and no repairs should be made" Okay great, it does run at 3/4's, but will it ever get any hotter? What will this now do to the life of my engine? I'm burning oil now, is that because it's hotter?
Last side of the issue- GM Fountain (in Orlando) They are absolute idiots. They antagonize, they want to argue with you, they try to talk to you like your stupid, yet they are complete morons. GM has a MAJOR problem here, and they refuse to do ANYTHING about it, so the service department has to tiptoe around their words and try to do anything to get you to leave before you ask to many questions. My truck ran at 203, it now runs at 240, that's GOT TO BE damaging something.
GM's only answer was "Hummers do this when you repair the cooling system" then they gave me a sheet of paper that said "The vehicle running at 3/4's shouldn't be cause for concern and no repairs should be made" Okay great, it does run at 3/4's, but will it ever get any hotter? What will this now do to the life of my engine? I'm burning oil now, is that because it's hotter?
Last side of the issue- GM Fountain (in Orlando) They are absolute idiots. They antagonize, they want to argue with you, they try to talk to you like your stupid, yet they are complete morons. GM has a MAJOR problem here, and they refuse to do ANYTHING about it, so the service department has to tiptoe around their words and try to do anything to get you to leave before you ask to many questions. My truck ran at 203, it now runs at 240, that's GOT TO BE damaging something.
One reason I ask is I've seen a few people say that after replacing their new radiator that their vehicle runs hotter than before, supposedly the "new normal". If the radiator IS smaller than the original would that be the reason it runs hotter is that the radiator is smaller and therefore not holding as much coolant to keep it cool?
I'm a female and not a mechanic, so if this sounds stupid to anyone, please forgive me! lol
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Part 2: How can one insure that they are getting the newer design radiator and it is smaller so that we hopefully won't get the cracked issue again? Is there a dimensions difference that someone knows of?
#405
06-17-2013, 06:13 PM
This is what I'm wondering. When one gets a new radiator, whether a cheap one online OR the one from the dealer, are we going to get the NEW design that was a little smaller so it does not hit the support frame any more or will it be the exact same size as our original 2006-2007 H3 radiator?
One reason I ask is I've seen a few people say that after replacing their new radiator that their vehicle runs hotter than before, supposedly the "new normal". If the radiator IS smaller than the original would that be the reason it runs hotter is that the radiator is smaller and therefore not holding as much coolant to keep it cool?
I'm a female and not a mechanic, so if this sounds stupid to anyone, please forgive me! lol
***********************************
Part 2: How can one insure that they are getting the newer design radiator and it is smaller so that we hopefully won't get the cracked issue again? Is there a dimensions difference that someone knows of?
One reason I ask is I've seen a few people say that after replacing their new radiator that their vehicle runs hotter than before, supposedly the "new normal". If the radiator IS smaller than the original would that be the reason it runs hotter is that the radiator is smaller and therefore not holding as much coolant to keep it cool?
I'm a female and not a mechanic, so if this sounds stupid to anyone, please forgive me! lol
***********************************
Part 2: How can one insure that they are getting the newer design radiator and it is smaller so that we hopefully won't get the cracked issue again? Is there a dimensions difference that someone knows of?
I replaced my rad over a year ago, due to a stress crack.
Never had to add a drop of coolant since!
I replaced with the silla rad from stylintrucks:
9589A Silla - OE Replacement Radiator (New) At StylinTrucks.com
I also enhanced my upper mount, so it doesn't move as much = less chance for stress crack!
After rad replacement, my temp gauge was still between 1/4 & 1/2, normal operating temperature.
I since then, replaced my t-stat + housing assembly, and now my normal operating temperature is always 1/2..
If the temp runs hotter, city, stop and go, driving on a very hot day, but, not normal to run over 1/2 on the gauge, there is an underlying problem.
GL
#406
06-17-2013, 06:16 PM
The redesigned radiator is not smaller. The top of it is slanted back away from the frame more so it doesn't hit. I don't know why they run hotter after putting the redesigned radiator in. I have no clue. I never paid much attention to the temp gauge before, so I don't remember where it was before, but I don't think ours ran as hot as it does now. But we are still well within the normal temperature range, so it's no problem. The only real way to know what your temp is is to measure the temp. the gauge doesn't tell you what the actual temp is.
#408
06-25-2013, 05:25 AM
just had the same problem with my 07 hummer and replaced the radiator, to yes we need a class action law suit..count me in..contact me via email on how to get in on this lawsuit...Thanks
