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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1371 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement (2WD) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  1. Install the lower heat insulator.
  2. Install the lower heat insulator bolts.

    Tighten:  Tighten the lower heat insulator bolts to 12 N.m (9 lb ft).

  3. Install the following components:
    • The exhaust manifold gasket
    • The exhaust manifold
  4. Install the 2 exhaust manifold nuts (1) and 3 exhaust manifold bolts (2).

    Tighten:  Tighten the exhaust manifold nuts and bolts to 37 N.m (27 lb ft).

  5. Install the upper heat insulator.
  6. Fig 1: Exhaust Manifold Nuts And Bolts (2WD)
    GM836343Courtesy of GENERAL MOTORS CORP.
  7. Install the upper heat insulator bolts.

    Tighten:  Tighten the upper heat insulator bolts to 18 N.m (13 lb ft).

  8. Fig 2: Manifold Support Bracket Bolts
    GM234425Courtesy of GENERAL MOTORS CORP.
  9. Install 1 bolt (1) to the manifold support bracket to exhaust manifold.

    Tighten:  Tighten the exhaust manifold support bracket bolt to 49 N.m (37 lb ft).

  10. Install the exhaust manifold flange gasket.
  11. Install the following components to the exhaust manifold flange:
    • The springs
    • 2 bolts

      Tighten:  Tighten the exhaust manifold flange bolts to 43 N.m (32 lb ft).

  12. Install the exhaust pipe hanger (2).
  13. Fig 3: Heated Oxygen Sensor (HO2S1), Exhaust Pipe Hanger, Springs And Bolts
    GM836332Courtesy of GENERAL MOTORS CORP.
  14. Install the Heated Oxygen Sensor (HO2S1) (1). Refer to Heated Oxygen Sensor Replacement - Position 1 (FWD) or Heated Oxygen Sensor Replacement - Position 1 (AWD) in Engine Controls - 1.8L (LV6).
  15. Lower the vehicle.
  16. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  17. Connect the negative battery cable.