GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Camshaft Timing Chain and Sprocket Replacement

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Remove the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement .
  3. Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are aligned.

    4. Object Number: 63263 Size: SH
  4. Remove the timing chain and sprocket. Refer to Timing Chain and Sprockets Removal .
  5. Clean and inspect all parts. Refer to Timing Chain and Sprockets Clean and Inspect .

Installation Procedure

    Object Number: 63263 Size: SH
  1. Install the timing chain and sprocket. Refer to Timing Chain and Sprockets Installation .
  2. Install the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector Replacement .
  3. Connect the negative battery cable.