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    Subwoofer upgrade in a leased 2021 GMC Terrain

    2021-gmc-terrain-car-audio-JL-audio-installations-custom-audio-erie-pa
    Custom Audio was presented the opportunity to add a subwoofer to the factory audio system in a leased 2021 GMC Terrain. The customer had one and only request besides adding bass of course. She did not want anything to be drilled into the vehicle. Read more 

     

    More coming soon!