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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1670 (Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L - Repair Instructions - Off Vehicle (2 Of 3)) >> Intake Manifold Cleaning and Inspection >> Cleaning Procedure

Cleaning 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: Intake Manifold-To-Cylinder Head Gasket
    GM1277097Courtesy of GENERAL MOTORS CORP.
  1. Remove and discard the intake manifold-to-cylinder head gaskets (514).
    2. Fig 2: Removing/Installing Intake Manifold Bolts
    GM1403311Courtesy of GENERAL MOTORS CORP.
  2. Remove the manifold absolute pressure (MAP) sensor. Refer to Intake Manifold Removal (Without Active Fuel Management) or Intake Manifold Removal (With Active Fuel Management) .
  3. Remove the evaporative emission (EVAP) canister purge solenoid valve, EVAP tubes, and fuel rail with injectors (500). Refer to Fuel Rail and Injectors Removal .
  4. Remove the throttle body and gasket. Refer to Throttle Body Assembly Removal .
  5. Clean the intake manifold in solvent.
    6. WARNING: Refer to Safety Glasses and Compressed Air Warning .
  6. Dry the intake manifold with compressed air.
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