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  1. #1

    Default Rust on frame???

    So is rust on the frame and other parts under the truck normal after only a year and a half????

    Just want to be sure this is where the extra holes are pre drilled in the frame etc.
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  2. #2
    Master Mechanic daddytech's Avatar
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    Mar 2008
    Portland TN


    no actually it's not normal. you should have had some kind of protective coating on the undercarriage to prevent that, it'll all eventually have rust on it but on a brand new truck you shouldn't have it for a while yet.

  3. #3


    yeah I have the black under coating on there but where the holes are it is rusty , maybe I should take it to the stealer and see what they say

  4. #4
    Master Mechanic tattooed4life's Avatar
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    Apr 2008
    Stevensville MI


    Take it in, it should have been undercoated from factory and as new as it is there's no way it should be rusting by now.
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  5. #5

    Thumbs up rust spots

    Quote Originally Posted by tattooed4life View Post
    Take it in, it should have been undercoated from factory and as new as it is there's no way it should be rusting by now.

    I have an 07 late body style silverado and i live up in alaska where they salt the roads and the climate isnt very fogiving to the truck and i have the underbody coating and i also have rust in the holes. perfectly normal

  6. #6


    I have an 08 and noticed that the rail under the bed where the frame and bed meet is rusted, like the machine sprayed and did not fully coat the rail, rather than mess with the dealer I am going to sand all the rust off and put a rust encapsulating coating over it and then 3m undercoat it. If I go to the dealer I get excuses, I dont like excuses, so I will save using them except for the big stuff.


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  7. #7


    Little more info on the climate its in do they salt the roads? that forms surface rust right away but regardless the surface has been effected and i dont think your gunna stop this monster by covering it after the fact

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  8. #8

    Join Date
    Feb 2008
    Red Wing, Minnesota, United States


    i know this has been brought up before on newer vehicles, you will have to go back to the dealership. Document this very well as they will start the run around with you, also GM has always had a different warranty for the rust on the vehicle, its actually better then the bumer to bumper warranty. i had a 94 sunbird that got rust on the seem under the door and in the doglegs, the car had over 80,000 miles when this appeared and the warranty covered it. And i know my brothers 01 sily has the warranty along with my 99 burban. if you have a really good body shop in your area take it to them for a free inspection, the can also help to push GM to get it corrected, not to mention we live in MN and body shops see this alot soe they have more experieance in dealing with warranty issues
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  9. #9
    Legend 2ToNe04's Avatar
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    Apr 2009
    Fresno California
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    maybe they didnt get some of that undercoating in the holes.

    take it in, its worth a try.

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  10. #10
    Master Mechanic Darknesss23's Avatar
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    Jun 2008
    Brookfield, Ct.


    its probably just surface rust and not have time to take care of this... i have it too but i live in CT where they do salt the roads ... even when they say they use "magic salt"... magic salt my A$$

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