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But one way or the other, when running diags in GM GDS2 (Newer Tech 2 like software GM uses for our cars for those that are not familiar) it doesn't register a regular UP command via the switch, yet Express (Pulling the window switch fully) does register, but wont open the window without the 'Normal' command being registered by the BCM/window motor. I know that window motor has its own brain as well and has ability to sense window position and some other stuff.
What you stated right there is what makes me think it is a problem on the control side before the BCM which I would think involves the wiring and the window control module.
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2014 ZL1 Roto-Fab intake, 2" TSP headers, JRE 125 package and tune.
2015 2LT RS overkill tune, 80MM throttle body with JacFab spacer, ported intake manifold and Roto-Fab cold air intake. Vitesse throttle controller.
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