{"product_id":"gmc-sierra-chevrolet-silverado-hd-block-off-plates-2023","title":"GMC Sierra \u0026 Chevrolet Silverado HD Block Off Plates (2023+)","description":"\u003cp\u003eCNC-machined HDPE block off plates designed to seal the factory speaker access holes in your 2023+ Sierra HD or Silverado HD (2500\/3500) doors. Whether you are running factory speakers or aftermarket upgrades, the original access holes in the inner door skin allow bass energy to escape and let road noise enter the cabin. Sealing them creates a semi-sealed chamber behind the speaker for tighter bass response and a quieter ride.\u003c\/p\u003e\u003cp\u003eEach plate features pre-marked alignment circles for easy positioning. Drill 1\/8-inch mounting holes and secure with the included zinc coated screws. Foam sealing strips included to seal the plate to the door panel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFront plates\u003c\/strong\u003e fit Regular Cab, Double Cab, and Crew Cab.\u003cbr\u003e\u003cstrong\u003eRear plates\u003c\/strong\u003e fit Crew Cab only.\u003c\/p\u003e\u003cp\u003eDoes not fit 1500 models - see our separate listings for Sierra\/Silverado 1500.\u003c\/p\u003e\u003cp\u003eCNC-machined from solid-core virgin HDPE in Mount Juliet, Tennessee. GMC, Sierra, Chevrolet, and Silverado are registered trademarks of General Motors. Used for compatibility reference only.\u003c\/p\u003e","brand":"Sounds Good Stereo","offers":[{"title":"Front \u0026 Rear Complete Set","offer_id":59851846713630,"sku":"24HDGMCBlockOffPlatesSet","price":214.0,"currency_code":"USD","in_stock":true},{"title":"Front Set Only","offer_id":59851846746398,"sku":"24HDGMCBlockOffPlatesFront","price":129.0,"currency_code":"USD","in_stock":true},{"title":"Rear Set Only","offer_id":59851846779166,"sku":"24HDGMCBlockOffPlatesRear","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/HD_Front_and_Rear_f6f1b574-8efd-4cc9-947a-e1f018a0a384.jpg?v=1787792040","url":"https:\/\/platinumhpsolutions.com\/products\/gmc-sierra-chevrolet-silverado-hd-block-off-plates-2023","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}