GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2005 🢒 H2 🢒 Engine 🢒 Engine Cooling 🢒 Engine Oil Cooler Hose/Pipe Replacement

Removal Procedure

    Object Number: 721990 Size: SH
  1. Remove the engine oil cooler hoses from the radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .
  2. Remove the engine oil cooler hoses from the fan shroud.
  3. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Remove the engine protection shield bolts.
  5. Remove the engine shield.

    6. Object Number: 688324 Size: SH
  6. Remove the engine oil cooler hose bracket bolt (1).
  7. Remove the engine oil cooler hose adapter bolts (2).
  8. Remove the engine oil cooler hose assembly and gasket.

    9. Discard the gasket.

  9. Inspect the fittings, connectors and cooler hoses for damage or distortion.

Installation Procedure

    Object Number: 688324 Size: SH
  1. Install the engine oil cooler hose assembly and a new gasket.

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

  2. Install the engine oil cooler hose adapter bolts (2).

    3. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  3. Install the engine oil cooler hose bracket bolt (1).

    4. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  4. Install the engine protection shield.
  5. Install the engine shield bolts.

    6. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).


    Object Number: 721990 Size: SH
  6. Install the engine oil cooler hoses to the fan shroud.
  7. Install the engine oil cooler hoses to the radiator. Refer to Engine Oil Cooler Pipe/Hose Quick Connect Fitting .