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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Engine Mechanical - 4.3L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Intake Manifold Removal

Intake Manifold Removal

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the evaporative emission (EVAP) canister purge solenoid valve harness.
    1. Push the quick disconnect clip and hold in place.
    2. Pull outward on the harness elbow.
      Fig 1: Removing EVAP Canister Purge Solenoid Valve Harness
      G02077975Courtesy of GENERAL MOTORS CORP.
  2. Remove the engine coolant temperature (ECT) sensor wire connector, if equipped, from the engine wiring harness bracket.
  3. Remove the lower intake manifold bolts.

    Important: 

    • The intake manifold may be removed as an assembly. Do not remove the specific intake manifold components unless component service is required.
    • Do not allow dirt or debris to enter the fuel system. Ensure that the ends of the fuel system are properly sealed.
    • Do not disassemble the Central Sequential Fuel Injection (SFI) unit, unless service is required.
  4. Remove the intake manifold assembly.
  5. Remove and discard the lower intake manifold gaskets.
    Fig 2: Removing Bolts, Lower Intake Manifold Assembly & Gaskets
    G02077976Courtesy of GENERAL MOTORS CORP.
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