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What is the Difference Between B&W Companion Hitch 3770 and 3775 for Chevy/GMC OEM Prep Package


Why won’t the 3770 fit a 2021 GMC Denali with the puck system?


Expert Reply:

The OEM pucks on the 2016-19 Chevy/GMC trucks are slightly different than the OEM pucks that are being used on the 2020 and newer trucks, so the footprint on the # BWRVK3770 is going to be slightly different than the # BWRVK3775.

Since you've got a 2021 GMC Sierra Denali then you'll want to use the # BWRVK3775, which is the Companion slider that is designed for the 2020 and newer GMC/Chevy OEM pucks.

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