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Home >> Hummer >> 2006 >> H3 Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust >> Repair Instructions >> Exhaust Manifold Replacement >> Installation Procedure

Installation Procedure

    Fig 1: View Of Exhaust Manifold Gasket
    GM858159Courtesy of GENERAL MOTORS CORP.
  1. Clean and apply threadlock GM P/N 12345493 (Canadian P/N 10953488) to the exhaust manifold bolt threads.
  2. Position a NEW exhaust manifold gasket onto the cylinder head.
    3. Fig 2: View Of Exhaust Manifold
    GM858158Courtesy of GENERAL MOTORS CORP.
  3. Position the exhaust manifold against cylinder head.
  4. Install the exhaust manifold bolts.
    5. Fig 3: Installing Exhaust Manifold Bolts
    GM858367Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  5. Tighten the exhaust manifold bolts.

    Tighten: 

    1. Tighten the bolts a first pass in sequence to 20 N.m (15 lb ft).
    2. Tighten the bolts a second pass in sequence to 20 N.m (15 lb ft).
    3. Tighten the bolts a final pass in sequence to 20 N.m (15 lb ft).

  6. Install the exhaust manifold heat shield. Refer to Exhaust Manifold Heat Shield Replacement .
  7. Install the exhaust seal. Refer to Exhaust Seal Replacement .
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