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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 976 (Engine Controls - 6.6L (Lb7) (Introduction)) >> Repair Instructions >> Exhaust Gas Recirculation (EGR) Valve Vacuum Pump Replacement >> Removal Procedure

Removal 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. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement .
  2. Loosen the charged air cooler outlet duct to clamp (1).
    IMPORTANT: Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting.
    3. Fig 1: View Of Charged Air Cooler Outlet Duct & Clamps
    GM877275Courtesy of GENERAL MOTORS CORP.
  3. Remove the charged air cooler outer duct.
  4. Remove the vacuum line from the exhaust gas recirculation (EGR) valve vacuum pump.
    5. Fig 2: EGR Valve Vacuum Line
    GM788902Courtesy of GENERAL MOTORS CORP.
  5. Remove drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L
  6. Remove EGR vacuum pump nuts (1).
    7. Fig 3: EGR Vacuum Pump Nuts
    GM788903Courtesy of GENERAL MOTORS CORP.
  7. Remove the EGR vacuum pump.
    8. Fig 4: EGR Vacuum Pump
    GM788904Courtesy of GENERAL MOTORS CORP.
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