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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1003 (Engine Cooling System) >> Repair Instructions >> Exhaust Gas Recirculation (EGR) Coolant Hoses/Pipes Replacement (6.6L (LLY) Engine) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a NEW O-ring seal onto the coolant pipe. Lubricate the seal with engine coolant.
  2. Install the EGR coolant pipe.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the EGR coolant pipe bolts.

    Tighten:  Tighten the bolts to 25 N.m (18 lb ft).

    4. Fig 1: View Of Exhaust Gas Recirculation (EGR) Coolant Pipe, Hose & Bolts
    GM1335419Courtesy of GENERAL MOTORS CORP.
  4. Install the EGR coolant pipe hose.
  5. Position the EGR coolant pipe hose clamp.
  6. Connect the ECT sensor electrical connector.
    7. Fig 2: View Of Engine Coolant Temperature Sensor And Electrical Connector
    GM1335413Courtesy of GENERAL MOTORS CORP.
  7. Install the air inlet tube.
  8. Install the air inlet tube nuts.

    Tighten:  Tighten the nuts to 25 N.m (18 lb ft).

    9. Fig 3: View Of Air Inlet Tube
    GM1335564Courtesy of GENERAL MOTORS CORP.
  9. Position the engine harness to the air inlet tube.
  10. Install a NEW tie strap.
    11. Fig 4: View Of Electrical Harness Tie Strap
    GM1335476Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Lubricate the end of the duct prior to installation.
  11. Install the charged air cooler outlet duct to the intake.
  12. Tighten the charged air cooler outlet duct to intake hose clamp.

    Tighten:  Tighten the clamp to 6 N.m (53 lb in).

    13. Fig 5: View Of Charged Air Cooler Outlet Duct
    GM1334381Courtesy of GENERAL MOTORS CORP.
  13. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement in Engine Controls - 6.6L (LLY).
  14. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement in Engine Mechanical - 6.6L (LLY).
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