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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1624 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Left Side (6.6L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying exhaust manifold bolts and nuts
    GM1872439Courtesy of GENERAL MOTORS CORP.
  1. Install the a NEW exhaust manifold gasket onto the manifold studs.
    2. Fig 2: Positioning Exhaust Pipe Gaskets
    GM2385013Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Position the exhaust pipe gaskets with the tabs shown. Failure to do so will cause improper alignment of the gaskets and result in exhaust leaks.
  2. Position a NEW exhaust pipe gasket (1) between the exhaust manifold and the exhaust pipe. Align the tabs (2) on the gasket to face outward.
  3. Install the exhaust manifold onto the studs.
    4. CAUTION: Refer to Fastener Caution .
  4. Install and tighten the exhaust manifold bolts and nuts in the sequence shown to 57 N.m (42 lb ft).
  5. Tighten the 4 center bolts/nuts an additional pass to 57 N.m (42 lb ft)
    6. Fig 3: Exhaust Pipe To Exhaust Manifold Bolt Tightening Sequence - Left Side
    GM1872441Courtesy of GENERAL MOTORS CORP.
  6. Install and tighten the exhaust pipe to exhaust manifold bolts in the sequence shown (1, 2, and 3) to 53 N.m (39 lb ft).
    7. Fig 4: View Of Exhaust Manifold Heat Shield & Bolts
    GM1874792Courtesy of GENERAL MOTORS CORP.
  7. Position the exhaust manifold heat shield (2) to the manifold and install the bolts (1) and tighten to 10 N.m (89 lb in).
  8. Install the steering shaft coupling to the intermediate shaft.
    9. Fig 5: View Of Upper & Lower Intermediate Shafts & Components
    GM1701888Courtesy of GENERAL MOTORS CORP.
  9. Install the steering shaft coupling nut (1) and bolt (2) at the steering shaft coupling and tighten to 50 N.m (37 lb in).
  10. Install the wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side (Chevrolet) or Front Wheelhouse Liner Replacement - Right Side (GMC) .
  11. Remove the charge air cooler inlet pipe. Refer to Charge Air Cooler Inlet Pipe Replacement .
  12. Lower the vehicle.
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