Have you looked under your Colorado to notice that your fuel pump is mounted in a very precarious position to the frame rail, exposing fuel filters and drain plug in the bottom of the pump to potential damage by rocks and debris when offroading. If the plug or screw in fuel filters are damaged you will lose all pressure to the fuel rail, which will result in engine failure. Simple solution is to fit a Roadsafe Fuel Pump Guard to protect the plug and filters.