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About JRW791

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  1. Having difficulty with 2015 Silverado Transmission tune. After two attempts with Black Bear in 2016, I gave up thinking it was the nature of the beast to have a poorly shifting 6 speed transmission. Or maybe it's a throttle problem? Under normal driving conditions shifts are inconsistent with a huge flat spot between 2nd and 3rd gear. I recently purchased a 2017 Tahoe and the shifts are perfect. It moves out and transmission shifts are not even noticeable unless you look at the tach. Any thoughts?
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