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no bass
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  1. DIY, Aftermarket/Upgrades
    I recently bought a 2011 GMC Acadia and the mechanic who owned it said he upgraded the stereo to the NAV unit. There is barely any bass to it like I know even the non-Bose system can do, and the backup camera has the "service camera" error when I put it in reverse. Any idea what to check to see...
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