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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 228 (Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement (LTG) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean all mating surfaces.
  2. Fig 1: Exhaust Manifold
    GM2865081Courtesy of GENERAL MOTORS COMPANY
  3. Install the exhaust manifold (3) to the cylinder head with a NEW gasket (2).
  4. NOTE:

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

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

    Refer to Fastener Caution .

  7. Tighten the exhaust manifold fasteners in 3 passes in the sequence shown to 20 N.m (15 lb ft).
  8. Install the exhaust manifold brace. Refer to Exhaust Manifold Brace Replacement (LTG) .
  9. Install the turbocharger. Refer to Turbocharger Replacement .
  10. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement (LTG) .