BACKRACK Original 19 (New Body Style) 20-24 Silverado 1500/22024 GMC Sierra 1500 Model 15019BACKRACK Original 19 (New Body Style) 20 24 Silverado 1500 22024 GMC Sierra 1500 Model 15019 Back Rack Cab Guard by BackRack(TM). BackRack's cab guard protectors mount to existing stake pockets at the front of your bed to protect your cab from damage caused by large, heavy cargo that may shift forward. For cargo such as small pipework, the "Safety Rack" comes with a welded criss cross center grid to give you the most complete protection. Reinforced