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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 (Upper) >> Removal

Intake Manifold (Upper): 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.
  1. Remove negative battery terminal. Release fuel system pressure. See FUEL PRESSURE RELEASE . Remove air filter assembly and intake duct.
  2. Remove wiring harness connectors and brackets and move to the side. Remove throttle and cruise control (if equipped) cable. Remove fuel lines and bracket at rear of lower intake manifold.
  3. Remove brake booster vacuum hose and PCV hose at upper intake manifold. Remove ignition coil and bracket. Remove purge solenoid and bracket.
  4. Remove upper intake manifold bolts and studs. Mark location of all studs for proper assembly. Remove upper intake manifold. See Fig 1. Clean old pieces of gasket from all gasket surfaces. Inspect manifold for cracks, broken flanges, and damage to gasket surface.
Fig 1: Exploded View Of Intake Manifold Assembly (VIN W)
G00082769Courtesy of GENERAL MOTORS CORP.
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