GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Controls - 6.6L (LLY) 🢒 Fuel Cooler Replacement

Removal Procedure

    Object Number: 1539129 Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Disconnect the fuel lines at the cooler . Refer to Metal Collar Quick Connect Fitting Service .
  3. Remove the fuel cooler bolts .
  4. Remove the fuel cooler.

Installation Procedure

    Object Number: 1539129 Size: SH
  1. Install the fuel cooler to the chassis and crossover.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the fuel cooler bolts .

    3. Tighten
    Tighten the bolts to 40 N·m (30 lb ft).

  3. Connect the fuel lines at the fuel cooler . Refer to Metal Collar Quick Connect Fitting Service .
  4. Lower the vehicle.
  5. Prime the fuel system. Refer to Fuel System Priming .
  6. Start the engine. If the engine stalls, repeat the above step.
  7. Once the engine starts, inspect for fuel leaks.