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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 994 (Engine Mechanical - 6.6L (LLY)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Intake Manifold Replacement - Center >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install NEW center intake manifold gaskets.
  2. Install the center intake manifold.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the center intake manifold bolts/nuts.

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

    4. Fig 1: View Of Center Intake Manifold
    GM1335931Courtesy of GENERAL MOTORS CORP.
  4. Install the turbocharger. Refer to Turbocharger Replacement .
  5. Install 2 NEW O-rings onto the intake manifold tube.
  6. Lubricate the O-rings with clean engine oil to aid in the installation.
  7. Install the intake manifold tube.
    8. Fig 2: View Of Intake Manifold Tube
    GM1335575Courtesy of GENERAL MOTORS CORP.
  8. Install the EGR valve cooler tube. Refer to Exhaust Gas Recirculation (EGR) Valve Cooler Tube Replacement in Engine Controls - 6.6L (LLY).
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