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Any opinions / info on the Platinum Shield Protection corrosion control module for my new Terrain? Any information on this would be appreciated.

Thanks!
 

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Groups like consumer reports say that these are not necessary any more, mostly because factory paint and rust protection is so good now. These are just a big profit center for dealerships.

The basic modules are just little batteries that get attached to the frame of the vehicle; the current prevent the cathodic reaction that causes rust -- it's chemistry 101. If you're really hot for it, 90% of the time you can get it much cheaper after-market.
 
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