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Home >> GMC >> 1996 >> C3500 HD 7.4 J, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 148 (Engine Mechanical - 4.3L V6 - VIN W & ,X) >> Removal & Installation >> Intake Manifold (Lower) >> Removal

Intake Manifold (Lower): Removal

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1997 Oldsmobile Bravada, 1997 GMC Sonoma, 1997 GMC Savana, 1997 GMC Safari, and 1997 GMC Pickup. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Removing upper intake manifold is not necessary when removing lower intake manifold, they are removed as an assembly.
  1. Remove distributor cap. Mark distributor rotor in relation to distributor housing. Mark base of distributor housing in relation to intake manifold. Remove distributor.
  2. Drain cooling system. Disconnect upper radiator hose at thermostat housing. Disconnect water pump by-pass hose and heater hose at intake manifold.
  3. Remove EGR valve. Disconnect fuel lines at rear of lower intake manifold. Disconnect wiring harness.
  4. Disconnect throttle cable and cruise control cable (if equipped). Unbolt throttle cable bracket from intake manifold. Move throttle cable bracket aside, with cables attached.
  5. Unbolt transmission dipstick tube and remove/move aside as necessary. Remove PCV valve and disconnect vacuum hoses as necessary.
  6. Remove serpentine belt. Unbolt A/C compressor/accessory bracketry and move aside as necessary to allow removal of intake manifold.
  7. Remove lower intake manifold bolts, lower intake manifold and gaskets.
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