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I noticed today while washing my truck bubbling on the front rim of the engine hood. 55k milage. 4 years old. Calif truck. Live near coast. Does this fall out of warranty? Anyone else have premature rust issues. How did you deal with it. Any luck from dealer. Joe
Cloud Automotive lighting Automotive tire Hood Grille
 

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I noticed today while washing my truck bubbling on the front rim of the engine hood. 55k milage. 4 years old. Calif truck. Live near coast. Does this fall out of warranty? Anyone else have premature rust issues. How did you deal with it. Any luck from dealer. Joe View attachment 9360
4 years old I'd run it by GM and see if they would warranty repair it for you.
 

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My 2016 bubbled like that and it was under warranty under the 3 year bumper to bumper. The problem is it came back again. It's a known problem from the factory. Should be a recall.
 

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Got quote. It is under cost analysis. Waiting to hear. I’ll let everyone know. When I know.
Because the hood is aluminum it may have not been prepped properly before being painted. The other possibility is that the corrosion started due to a rock chip that penetrated the paint down to the metal.
 
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