Manual shifting auto? - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Old 09-06-2019, 10:46 PM
johndeere16 johndeere16 is offline
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Join Date: Sep 2019
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Manual shifting auto?

I have a 03 TB 4.2, and was curious if it would harm anything to manually shift the automatic transmission to maybe let it rev to somewhere 6,500. The auto shifts at 6,100 at most, and I would like just a little more out of it. Another question (not that I plan to), has anyone reved the 4.2 to around 7,000 without modding it? I'm guessing that's not good for it, but I'm just curious lol
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