GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Camshaft Installation

    Object Number: 63212 Size: SH

    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 3 M8 - 1.25 x 100 mm (M8 - 1.25 x 4.0 in) bolts into the camshaft front bolt holes.

    3. Notice: 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 3 bolts from the front of the camshaft.

    5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 63211 Size: SH

    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 or debris.

  5. Install the camshaft retainer and the bolts.

    6. Object Number: 1665445 Size: SH
  6. Tighten the camshaft retainer bolts.

    7. Tighten

        • Tighten the hex head bolts (3) to 25 N·m (18 lb ft).
        • Tighten the TORX® head bolts (4) to 15 N·m (11 lb ft).

    Object Number: 260128 Size: SH
  7. Inspect the camshaft position (CMP) sensor O-ring seal. If the O-ring seal is not cut or damaged, it may be used again.
  8. Lubricate the O-ring seal with clean engine oil.
  9. Install the CMP sensor and bolt.

    10. Tighten
    Tighten the CMP sensor bolt to 25 N·m (18 lb ft).