GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Valve Lifter Replacement

Removal Procedure

    Object Number: 660517 Size: SH
  1. Remove the cylinder head. Refer to Cylinder Head Replacement - Left Side or Cylinder Head Replacement - Right Side .
  2. Loosen the valve lifter guide retainer bolts.
  3. Remove the valve lifter guide retainers.
  4. Remove the valve lifter guides.
  5. Remove the valve lifters.
  6. If required, clean and inspect the lifters. Refer to Valve Lifters Cleaning and Inspection .

Installation Procedure

    Object Number: 660517 Size: SH
  1. Apply clean engine oil to the roller and outside of the valve lifter.
  2. Install the valve lifter.
  3. Install the valve lifter guides on the valve lifters.
  4. Install the valve lifter guide retainer.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Tighten the valve lifter guide retainer bolt.

    6. Tighten
    Tighten the bolt to 11 N·m (97 lb in).

  6. Install the cylinder head. Refer to Cylinder Head Replacement - Left Side or Cylinder Head Replacement - Right Side .