do I have to replace the whole radiator

2011 CHEVROLET SILVERADO
120,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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GERSON FACUNDO
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Where can I get o ring replacements for the transmission cooling lines the ones that go to the radiator. I purchased a box at AutoZone with many standard sizes but they are too thick. it seems the old o ring is kind of flat on the OD. any body know anything about it or do I have to replace the whole radiator which will probably come with the o rings?
Nov 26, 2020 at 12:01 AM
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ASEMASTER6371
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Good morning,

Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

Go to a GM dealer parts department and they will give you the correct O rings. You cannot use the universal ones as they will fail when installing. Is this the seal you are referring to? I attached a picture for you. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Nov 26, 2020 at 2:33 AM
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GERSON FACUNDO
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Yes, I believe is the same of your diagram and thanks. I will be going to the dealership then. thank you for the info.
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Nov 26, 2020 at 9:08 AM
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ASEMASTER6371
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You are welcome.

Let us know if you have any other questions.

Always glad to help.

Roy
Oct 14, 2021 at 4:36 AM