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Originally Posted by BlenderWizard
Alright, I've owned hondas, mitsus, oldsmobiles, fords and chevys. Cold weather, first start of the day piston slap IS NORMAL. All the vehicles I've owned do it, and they have spanned from year model 84 to 96. I am excluding my current silverado because I've only had it since April, and I've heard no slap, but the weather's been pretty warm.
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Could be that your Silverado is new or a newer model that GM has since resolved the piston slap issue. If your truck developes this problem I will guarantee you that you will not like it.
Iv`e owned over 10 vehicles in my life and drove many others. Iv`e only had the problem once before in a 74 Malibu with well over 100,000 miles on it. IT was nowhere near as harsh as my Silverado. I really hope you don`t have this problem. Its more than a slight tap. Sounds just like a cold diesel on start up. Can`t be good for longevity. This problem would bankrupt GM if they were to address it. Its not as simple as a part replacment. Even to fix current production (if not done already) would be a huge undertaking. redesigning the pistions and machinery thats used to produce the engines. I can`t blame them for looking the other way. Its a monster! GM should do more endurance testing before they push the green button.