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Topline Truck Bed Extender Installation - 2010 GMC Sierra

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How to Install the Topline Truck Bed Extender on a 2010 GMC Sierra

Today on our 2010 GMC Sierra we'll be installing Topline fold down truck bed extender, part number BX4004-01. First note that this vehicle has a tailgate cover. We'll need to remove the cover and locate the position for our bed extender. Let's go ahead and remove the fasteners and sit the cover aside. Now we'll go ahead and sit the bed extender up on the tailgate. We'll need to locate a flat… see more >