OEM 2009 Buick Lucerne Fuel Tank

2009 Buick Lucerne Fuel Tank Parts Questions & Experts Answers

• Q: How to replace the fuel tank module (NU6) on 2009 Buick Lucerne?

  A: The first responsibility when replacing the Fuel Tank module (NU6) is to drain the fuel system. Start by removing the rear compartments liner along with bolts from the fuel sender opening cover before taking off the cover. You should first remove the fuel feed rear pipe quick connect fitting and evaporative emission (EVAP) pipe quick connect fitting from the sender and then disconnect the fuel level sensor wiring harness electrical connectors . The technician needs to relocate both the fuel feed pipe and the evap pipe and the harness connector to maintain proper access. The j 45722 (Fuel Sender Lock Ring Wrench) helps unlock the fuel sender lock ring through counterclockwise rotation before removing the lock ring. The sender must be slightly raised up while the operator disconnects the vent line quick connect fitting. Lower the assembly while observing the vapor line quick connect fittings so you can secure the interior vent lines using a string that will keep them out of the fuel stream. Remove the fuel from the sender reservoir bucket into an approved container after disconnecting the vapor line quick connect fittings (1 and 2) from the module flange by carefully tilting the sender. Dispose of the old fuel pump sender o-ring seal after examining both the lock ring for any damage and checking for warpage. Replace the lock ring if needed. Start by applying a new fuel pump sender o-ring seal onto the Fuel Tank. Then tilt the sender unit toward the tank opening until it clears and lower it into its position. Connect both interiors of the vent line quick connectors (1 and 2) while detaching the keeping string. The j 45722 tool allows you to turn the lock ring clockwise for full reverse rotation until a secure position is achieved. Reconnect the fuel feed pipe along with the harness connector then proceed to join the evap line quick connect fitting followed by the fuel feed rear pipe quick connect fitting to the sender before connecting the fuel level sensor wiring harness electrical connector . Complete the leak inspection by turning the ignition on and off as directed and then connect the negative Battery Cable. The repair ends with fuel sender access hole cover attachment using bolts tightened to 2 nm (18 lb in). Then reinstall both the rear compartment liner and intake manifold cover.