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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 238 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Left (3.5L) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the throttle body air inlet duct. Refer to AIR CLEANER INTAKE DUCT REPLACEMENT in Engine Controls - 3.5L.
  2. Drain the engine coolant from the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM (STATIC FILL) in Engine Cooling.
  3. Remove the right engine mount strut bracket. Refer to ENGINE MOUNT STRUT BRACKET REPLACEMENT - LEFT in Engine Mechanical - 3.5L.
  4. Disconnect the inlet radiator hose from the engine. Refer to RADIATOR HOSE REPLACEMENT - INLET in Engine Cooling.
  5. Remove the thermostat bypass pipe. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT - LX9 (3.5L) in Engine Cooling.
  6. Remove the exhaust crossover pipe bolts from the engine left side exhaust manifold. Refer to Exhaust Crossover Pipe Replacement .
    7. Fig 1: View Of Exhaust Manifold Heat Shield & Bolts - Left
    GM60831Courtesy of GENERAL MOTORS CORP.
  7. Remove the exhaust manifold heat shield bolts.
  8. Remove the exhaust manifold heat shield.
    9. Fig 2: View Of Exhaust Manifold & Exhaust Manifold Gasket - Left
    GM54301Courtesy of GENERAL MOTORS CORP.
  9. Remove the exhaust manifold nuts.
  10. Remove the exhaust manifold.
  11. Remove the exhaust manifold gasket.
  12. Clean the engine left side exhaust manifold to the engine left side cylinder head sealing surfaces.
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