GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Denali 🢒 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 intake 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.