2010 GMC Sierra 3500 HD Fuel Injector

You should install the new fuel injector upper and lower O-ring seals, the fuel injectors, the fuel injector retainers, the fuel rail bolts, the EVAP tube, and purge solenoid, the EVAP canister purge solenoid to the fuel rail bracket and engage the retainer, the PCV hose, the negative battery cable stud, the CPA retainer, and the engine wiring harness clip.

You should fill the injector cleaning tank with regular unleaded gasoline, be sure to follow all additional instructions provided with the tool, disable the vehicle fuel pump, disconnect the fuel feed and return line, turn the ignition to the off position, disconnect the J 35800-A from the fuel rail, reconnect the vehicle fuel pump relay and oil pressure switch connector, pour the entire contents of GM Fuel System Treatment Plus and advise the customer.

You should remove the air cleaner outlet duct, the engine wiring harness bracket nut, 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.