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I have a sidebar in my book regarding TTY bolts. Obviously it has to do with internal engine bolts, but some of the concerns are the same.
In addition, the GM techs may not read the service manuals (and once in a while they're wrong), but I do. I always replace TTY bolts.
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Chris Werner
Author, "How to Rebuild GM LS-Series Engines"
Contributing Editor, GM High-Tech Performance (1998-2014)
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