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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 Throttle Solenoid 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. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery) or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) in Engine Electrical.
  2. Loosen the charged air cooler outlet duct 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 outlet duct.
  4. Disconnect the exhaust gas recirculation (EGR) throttle valve solenoid electrical connector.
    5. Fig 2: EGR Throttle Valve Solenoid Electrical Connector
    GM788838Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the EGR throttle valve solenoid vacuum lines (1).
    6. Fig 3: EGR Throttle Valve Solenoid Vacuum Lines
    GM788849Courtesy of GENERAL MOTORS CORP.
    Fig 4: EGR Valve Throttle Solenoid & Bolt
    GM788850Courtesy of GENERAL MOTORS CORP.
  6. Remove the solenoid bolt and solenoid (1).
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