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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1354 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Camshaft Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: If camshaft replacement is required, the valve lifters must also be replaced.
  1. Lubricate the camshaft journals and the bearings with clean engine oil.
  2. Install three M8-1.25 x 100 mm (M8-1.25 x 4.0 in) bolts to the bolt holes in the front of the camshaft.
    NOTE: All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.
  3. Using the bolts as a handle, carefully install the camshaft into the engine block.
  4. Remove the three bolts from the front of the camshaft.
    Fig 1: Installing Camshaft
    G02106804Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE .
    IMPORTANT: Install the retainer plate with the sealing gasket facing the engine block.

    The gasket surface on the engine block should be clean and free of dirt and/or debris.

  5. Install the camshaft retainer and bolts.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

    Fig 2: Installing Camshaft Retainer & Bolts
    G02106805Courtesy of GENERAL MOTORS CORP.
  6. Inspect the camshaft sensor O-ring seal. If the O-ring seal is not cut or damaged, it may be reused.
  7. Lubricate the O-ring seal with clean engine oil.
  8. Install the camshaft sensor and bolt.

    Tighten 

    Tighten the bolt to 25 N.m (18 lb ft).

  9. Install the timing chain and camshaft sprocket. Refer to Timing Chain and Sprockets Replacement .
  10. Install the valve lifters. Refer to Valve Lifter Replacement .
  11. Install the radiator support. Refer to RADIATOR SUPPORT REPLACEMENT .
    Fig 3: Installing Camshaft Sensor & Bolt
    G02106806Courtesy of GENERAL MOTORS CORP.
  12. Remove the hood hinge bolts from the service position (2).
  13. Lower the hood to the normal position.
  14. Install the hood hinge bolts.

    Tighten 

    Tighten the bolts to 25 N.m (18 lb ft).

    Fig 4: Installing Hood Hinge Bolts
    G02106807Courtesy of GENERAL MOTORS CORP.
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