Rear Forward Fuel Tank Crossmember For 2007-2019 Silverado/GMC Sierra RB7339 Rust Buster FrameworksThe Forward Fuel Tank Crossmember for 2007 2019 Chevy Silverado GMC Sierra 1500 Extended Cab is prone to erosion from the moisture and road salt over the course of it's life. If broken, the fuel tank will be unsecured from it's initial position and the rest of the frame will become unsettled, leaving the potential for even more problems down the road. That's where Rust Buster's can help you. No more ratchet strapping the fuel tank to the underside of