Carxtc Speaker Connection Plugs for Replacing Factory Rear Door 6.5 Inch Speakers. Fits GMC Sierra / Sierra Denali 2014 - 2018 1500 Crew CabA Pair of Speaker plug Adapaters for Installing a New Set of New Rear Door 6.5 Speakers in a GMC Sierra / Sierra Denali 2014 2018 2015 2016 2017 2018 14 15 16 17 18
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