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Home >> Hummer >> 2007 >> H3 Automatic >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust >> Repair Instructions >> Exhaust Manifold Heat Shield Replacement >> Installation Procedure

Installation Procedure

    Fig 1: View Of Exhaust Manifold Heat Shield
    GM858156Courtesy of GENERAL MOTORS CORP.
  1. Install the exhaust manifold heat shield to the exhaust manifold.
  2. Apply anti-seize GM P/N 12371386 (Canadian P/N 993128) to the exhaust manifold heat shield nuts.
  3. NOTE: Refer to Fastener Notice .
  4. Install the exhaust manifold heat shield nuts.

    Tighten:  Tighten the nuts to 10 N.m (89 lb in).

  5. Install the HO2S to the exhaust manifold. Refer to Heated Oxygen Sensor 1 Replacement .
  6. Fig 2: View Of Transmission Filler Tube & Bracket
    GM754346Courtesy of GENERAL MOTORS CORP.
  7. Position the automatic transmission filler tube to the AIR adapter if previously removed.
  8. Install the automatic transmission filler tube bracket nut.

    Tighten:  Tighten the nut to 12.5 N.m (111 lb in).

  9. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  10. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .