GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L 🢒 Fuel Pressure Relief Valve Replacement

Removal Procedure

    Object Number: 1739303 Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement.
  2. Remove the fuel pressure relief valve from the left fuel rail.

Installation Procedure

    Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1739303 Size: SH
  1. Install the fuel pressure relief valve to the left fuel rail.

    2. Tighten
    Tighten the valve to 100 N·m (74 lb ft).

  2. Install the engine cover. Refer to Engine Cover Replacement.
  3. Prime the fuel system. Refer to Fuel System Priming.
  4. Start the engine. If the engine stalls, repeat the above step.
  5. Once the engine starts, inspect for fuel leaks.