2010 GMC Sierra 3500 HD Fuel Pressure Regulator

You should remove the air cleaner outlet duct, the engine wiring harness bracket nut, the connector position assurance (CPA) retainer, the CPA retainer, the engine wiring harness clip, the negative battery cable stud, the negative battery cable terminal and engine wiring harness ground terminal, the engine wiring harness clip bolt, the positive crankcase ventilation (PCV) hose, the evaporative emission (EVAP) tube and purge solenoid, the fuel rail bolts, the fuel rail assembly, the fuel injector retainers, the fuel injectors, and the fuel injector upper and lower O-ring seals.

You should prevent fuel spillage, remove the engine cover, remove the engine cover, wrap a shop towel around the fuel rail service port, connect the CH-48027-3 to the fuel rail service port, connect the CH-48027-2 to the CH-48027-3, place the hose on the CH-48027-2, open the valve on the CH-48027-2, close the valve on the CH-48027-2, remove the hose on the CH-48027-2, disconnect the CH-48027-2, disconnect the CH-48027-3, remove the shop towel from around the fuel rail service port, install the fuel rail service port cap and then install the engine cover.