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GMC Topkick Performance Chips & Programmers

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Great device, Great customer service

Reviewed By David B (Wood Dale, IL) Reviewed for a 2017 GMC Sierra —3/13/2017 9:18 PM

Item shipped immediately. Really like the compact design. Shows lots of customization information about my Duramax. Intead of windshield mount I used a shot ram mount with ball to attach to the driver grab handle. Mounts out of the way but easy to see.

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Great buy

Reviewed By Kolton B (LEVELLAND, TX) Reviewed for a 2009 GMC Sierra —7/19/2016 11:58 PM

Got here extremely fast, works excellent.

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Reviewed By Drew L (Hay Springs, NE) —3/18/2017 7:36 PM

Works great! Haven't done any towing with it yet but daily use has increased mpg alittle and more power!

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