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PSIEXT07










Developed for: 2007 - 2014 GMC Sierra Extended Cab

PowerStage™ Upgrade includes SubStage Upgrade plus multi-channel DSP amplifier for factory speakers, wiring kit and mounting brackets.

*Powered subwoofer is not compatible with a 2007 Classic (2006 Body Style).  Subwoofer is not compatible with trucks that have a solid rear bench style seat without modifications and additional parts (not supplied).  Please contact Technical Support for the additional information.  Multi-channel amplifier is not compatible with vehicles that have Bose factory premium audio systems.  Multi-channel amplifier is not compatible with vehicles that have adjustable pedals.