GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Engine 🢒 Engine Controls and Fuel - 4.3L 🢒 Fuel Pulse Dampener Replacement

Removal Procedure

    Object Number: 1655471 Size: SH
  1. Remove the upper intake manifold. Refer to Upper Intake Manifold Replacement .
  2. Remove the fuel pressure dampener retaining clip (7).
  3. Twist and pull the fuel pressure dampener (6) in order to remove the regulator from the housing using a shop towel to catch any spilled fuel.
  4. Remove and discard the dampener O-ring seal (5).
  5. Cover the fuel pressure dampener housing to prevent contamination from entering the fuel system.

Installation Procedure

    Object Number: 1655471 Size: SH
  1. Lubricate the NEW O-ring with clean engine oil.
  2. Install the fuel pressure dampener O-ring seal (5).
  3. Install the fuel pressure dampener (6).
  4. Install the fuel pressure dampener retaining clip (7).
  5. Install the upper manifold. Refer to Upper Intake Manifold Replacement .
  6. Tighten the fuel fill cap.
  7. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  8. Inspect for leaks.
    9. 8.1. Turn the ignition ON, for 2 seconds.
    8.2. Turn the ignition OFF, for 10 seconds.
    8.3. Turn the ignition ON.
    8.4. Inspect for fuel leaks.