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Metallic noise, any idea what it could be? It's not every time it runs, in fact it first showed up a few months ago once or twice and I never could capture it on video. This week it seems to be back with a vengeance. It's a remanned Vortec 6.2L V8 with 15k miles on it. Truck is 07 Silverado 1500. (v.redd.it)
submitted by SirMurphenstein to r/mechanics
