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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 102 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Crossover Pipe Replacement (LZ4) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Coolant Crossover Pipe Bolts
    GM1584086Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  1. Position the coolant crossover pipe to the cylinder heads.
  2. Install the coolant crossover pipe bolts (1-4).

    Tighten:  Tighten the bolts to 50 N.m (37 lb ft).

  3. Fig 2: View Of Crossover Pipe And Thermal Bypass Hose
    GM1584078Courtesy of GENERAL MOTORS CORP.
  4. Install the thermal bypass hose to the crossover pipe.
  5. Position the thermal bypass hose clamp at the crossover pipe.
  6. Fig 3: Identifying Radiator Inlet Hose & Crossover Pipe
    GM1583647Courtesy of GENERAL MOTORS CORP.
  7. Install the radiator inlet hose to the crossover pipe.
  8. Position the radiator inlet hose clamp at the crossover pipe.
  9. Fig 4: Identifying Radiator Surge Tank Inlet Pipe Bolts
    GM1774997Courtesy of GENERAL MOTORS CORP.
  10. Install the radiator surge tank pipe to the crossover pipe.
  11. Install the radiator surge tank pipe bolts (2).

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

  12. Fig 5: Identifying Radiator Surge Tank Inlet Hose Clamp
    GM1774996Courtesy of GENERAL MOTORS CORP.
  13. Install the radiator surge tank inlet hose to the inlet pipe.
  14. Position the radiator surge tank inlet hose clamp (1) at the surge tank inlet pipe.
  15. Install the power steering pump. Refer to Power Steering Pump Replacement .
  16. Install the drive belt idler pulleys. Refer to Drive Belt Idler Pulley Replacement .
  17. Install the generator. Refer to Generator Replacement (L61) or Generator Replacement (LZ4) .
  18. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .