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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Exhaust Manifold Replacement (LTG) >> Installation Procedure

Installation Procedure

  1. Clean all mating surfaces.
    2. Fig 1: Exhaust Manifold
    GM2865081Courtesy of GENERAL MOTORS COMPANY
  2. Install the exhaust manifold (3) to the cylinder head with a NEW gasket (2).
    3. NOTE:

    Fasteners have adhesive patch and must be tightened to final torque within 5 minutes.

  3. Install NEW fasteners (1) and hand tighten.
    4. Fig 2: Exhaust Manifold Bolt Tightening Sequence
    GM2769474Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  4. Tighten the exhaust manifold fasteners in 3 passes in the sequence shown to 20 N.m (15 lb ft).
  5. Install the turbocharger. Refer to Turbocharger Replacement .
  6. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement (LTG) .
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