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Old 01-04-2023, 05:16 PM   #1
spyderbuddy


 
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For the 2010 to 2012 V6 Guys

Check your Radiator cap, if the gasket (O Ring) is flat change it.
Mine quit pulling the antifreeze back into the engine because no vacuum
almost cost me an overheated engine
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Old 01-05-2023, 02:26 PM   #2
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Do you mean compared to a tubular gasket?

Good save!

Edit: thanks for uploading pictures.
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Old 01-07-2023, 09:07 AM   #3
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Totally agree, check your caps. Mine also had a seal that was flattened and there was a tear in the other seal, if i remember correctly. I was happy I saw it before anything leaked.

My car is 2010 v6 LLT, 140k miles and 10 years old at the time when I replaced the cap.

Looks like user 10camarodude had the same issue on this thread: link

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Old 07-15-2023, 08:06 AM   #4
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Thank you so much for this tip!! I'm glad I randomly came across this thread. I ordered a new cap from Amazon and just installed it. The difference between the old cap and the new one was very obvious. The new cap even clicked into place differently after I fully screwed it in. I think more people need to be aware of this easy preventative maintenance.
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Old 07-15-2023, 01:25 PM   #5
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Quote:
Originally Posted by spyderbuddy View Post
Check your Radiator cap, if the gasket (O Ring) is flat change it.
Mine quit pulling the antifreeze back into the engine because no vacuum
almost cost me an overheated engine
Great catch spyderbuddy!! And for posting..
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Old 01-15-2024, 08:31 AM   #6
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Interesting... Just checked mine and it is missing too but no coolant leak or overheating issues hmmmm....
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Old 01-15-2024, 01:01 PM   #7
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I went ahead and purchased a new AC Delco one from Amazon just to be on the safe side.
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Old 01-16-2024, 08:30 AM   #8
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Had to replace mine a few years ago on my SS. The O ring went flat.
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Old 01-18-2024, 04:40 AM   #9
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Received my new radiator cap yesterday and while comparing the two, mine is actually flat as well rather than missing.



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