Raise the rear of the vehicle and support it on jackstands, then remove the cable from the negative battery terminal. Drain all fuel from the tank into a clean container, mark and disconnect the fuel lines and the filler pipe at the fuel tank. While the tank is supported by an assistant or a floor jack, remove the five retaining bolts, carefully lower the tank, unplug the gauge unit connector, and remove the tank from the vehicle. All repair work should be performed by a professional. Before reinstalling the tank, ensure that all traces of dirt and corrosion are cleaned from it, and apply a coat of rust preventative paint; if the tank is rusted internally, it should be replaced with a new one. Installation follows the reverse of the removal procedure.