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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 921 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Right Side (6.6L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Oil Level Indicator Tube Bolt & Manifold Gasket
    GM1875033Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW exhaust manifold gasket (1) onto the studs.
  2. NOTE: Refer to Fastener Notice .
  3. Rotate the oil level indicator tube into position and install the oil level indicator tube bolt (2).

    Tighten:  Tighten the bolt to 21 N.m (15 lb ft).

  4. Fig 2: View Of Exhaust Manifold & Gasket
    GM1875032Courtesy of GENERAL MOTORS CORP.
  5. Position a NEW exhaust pipe gasket between the exhaust manifold and exhaust pipe. Align the tabs on the gasket to face downward.
  6. Install the exhaust manifold onto the studs.
  7. Fig 3: Exhaust Manifold Bolt Tightening Sequence -- Right Side
    GM1872440Courtesy of GENERAL MOTORS CORP.
  8. Install and tighten the exhaust manifold bolts and nuts in the sequence shown.

    Tighten: 

    • Tighten the bolts/nuts to 57 N.m (42 lb ft).
    • Tighten the 4 center bolts/nuts an additional pass to 57 N.m (42 lb ft).

  9. Fig 4: View Of Exhaust Manifold Bolts
    GM1875031Courtesy of GENERAL MOTORS CORP.
  10. Position the exhaust manifold heat shield to the manifold and install the exhaust manifold bolts (1).

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

  11. Fig 5: View Of Exhaust Pipe Bracket Bolts
    GM1875030Courtesy of GENERAL MOTORS CORP.
  12. Install the exhaust pipe bracket and the exhaust pipe to exhaust manifold bolts (1).
  13. Fig 6: View Of Exhaust Manifold Bolt Tightening Sequence
    GM1872442Courtesy of GENERAL MOTORS CORP.
  14. Tighten the exhaust pipe to exhaust manifold bolts in the sequence shown (4, 5, and 6).

    Tighten:  Tighten the bolts to 53 N.m (39 lb ft).

  15. Install the wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side (Chevrolet) or Front Wheelhouse Liner Replacement - Right Side (GMC) .
  16. Install the turbocharger exhaust pipe. Refer to Turbocharger Exhaust Pipe Replacement (6.6L) .