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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1390 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Left (8.1L Engine) >> Installation Procedure

Installation Procedure

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Left Exhaust Manifold, Gasket, Bolts And Nuts
    GM470679Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW exhaust manifold gasket.
  2. Install the exhaust manifold.
    NOTE: Refer to FASTENER NOTICE .
  3. Install the exhaust manifold bolt and nuts.

    Tighten: 

    • Tighten the exhaust manifold bolt to 35 N.m (26 lb ft).
    • Tighten the exhaust manifold nuts to 16 N.m (12 lb ft).

  4. Raise the vehicle.
    5. Fig 2: View of Exhaust Manifold Heat Shield
    GM470676Courtesy of GENERAL MOTORS CORP.
  5. Install the exhaust manifold heat shield.
  6. Install the exhaust manifold heat shield bolts and nuts.

    Tighten:  Tighten the heat shield bolts and nuts to 25 N.m (18 lb ft).

  7. Lower the vehicle.
  8. Install the spark plugs. Refer to SPARK PLUGS .
    9. Fig 3: View Of Spark Plug Wire
    GM470666Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Fully install the spark plug wire by pushing on the exposed end of the spark plug boot. Do not push the spark plug wire on to the spark plug by using the metal heat shield.
  9. Install the spark plug wires to the spark plugs and ignition coils.
  10. Install the wheelhouse panel. Refer to WHEELHOUSE PANEL REPLACEMENT .
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