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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1293 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement (AWD) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
CAUTION: Refer to BATTERY DISCONNECT CAUTION .
  1. Disconnect the negative battery cable.
  2. Raise and properly support the vehicle. Refer to JACKING AND LIFTING - AWD .
  3. Remove the Heated Oxygen Sensor (HO2S1) (1). Refer to HEATED OXYGEN SENSOR 1 in Engine Controls - 1.8L (LV6).
  4. Remove the exhaust pipe hanger (2).
  5. Remove the following components from the exhaust manifold flange:
    • 2 bolts
    • The springs
  6. Remove the exhaust manifold flange gasket.
  7. Remove 1 bolt (1) from the manifold support bracket to exhaust manifold.
    Fig 1: Identifying Exhaust Manifold Components (AWD)
    G01548133Courtesy of GENERAL MOTORS CORP.
    Fig 2: Removing 1 Bolt (1) From Manifold Support Bracket To Exhaust Manifold
    G01548134Courtesy of GENERAL MOTORS CORP.
  8. Remove the upper heat insulator bolts.
  9. Remove the upper heat insulator.
  10. Remove the 2 exhaust manifold nuts (1) and 3 exhaust manifold bolts (2).
  11. Remove the following components:
    • The exhaust manifold
    • The exhaust manifold gasket
  12. Remove the lower heat insulator bolts.
  13. Remove the lower heat insulator.
    Fig 3: Removing 2 Exhaust Manifold Nuts (1) And 3 Exhaust Manifold Bolts (2)
    G01548135Courtesy of GENERAL MOTORS CORP.
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