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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1783 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Left (8.1L Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the wheelhouse panel. Refer to WHEELHOUSE PANEL REPLACEMENT in Body Front End.

    Important:  Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.

  2. Remove the spark plug wires from the spark plugs and ignition coils.
  3. Remove the spark plugs. Refer to SPARK PLUG .
    Fig 1: Removing Spark Plug Wires - Left (8.1L)
    G02133464Courtesy of GENERAL MOTORS CORP.
  4. Raise and suitably support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  5. Remove the exhaust manifold heat shield bolts and nuts.
  6. Remove the left exhaust manifold heat shield.
  7. Lower the vehicle.
    Fig 2: Removing Exhaust Manifold Heat Shield, Bolts & Nuts - Left (8.1L)
    G02133465Courtesy of GENERAL MOTORS CORP.
  8. Remove the exhaust manifold bolt and nuts.
  9. Remove the exhaust manifold.
  10. Remove the discard the exhaust manifold gasket.
  11. Clean and inspect the exhaust manifold. Refer to EXHAUST MANIFOLD CLEANING AND INSPECTION .
    Fig 3: Removing Exhaust Manifold, Gasket, Bolt & Nuts - Left (8.1L)
    G02133466Courtesy of GENERAL MOTORS CORP.
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