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    Adding ethanol to raise octane ...

    I use non ethanol 90 and get almost 20 mpg on my 2010. It also runs better…
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    Auto locks

    Hi, just picked up a sweet 2010 Tahoe LTZ. Does anyone know how to turn off the auto locks when moving? My choices on the panel are only out of park, or when moving, but no option to shut off. Is there a trick? Thanks, even my dealer says no. Tim SOLVED at dealer they reprogrammed BCM. $130

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