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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 144 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Camshaft Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure .
  2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim .
  3. Remove the radiator. Refer to RADIATOR REPLACEMENT .
  4. Remove the A/C condenser. Refer to CONDENSER REPLACEMENT .
  5. Remove the engine cooling fan. Refer to FAN CLUTCH REPLACEMENT .
  6. Remove the valve lifters. Refer to Valve Lifter Replacement .
  7. Remove the timing chain and the camshaft sprocket. Refer to Timing Chain and Sprockets Replacement on page 6-115  .
  8. Remove the balance shaft drive gear.
    Fig 1: Removing Balance Shaft Drive Gear
    G02077863Courtesy of GENERAL MOTORS CORP.
  9. Remove the camshaft retainer bolts and retainer.
    Fig 2: Removing Camshaft Retainer Bolts & Retainer
    G02077864Courtesy of GENERAL MOTORS CORP.
  10. Remove the engine camshaft.
    1. Install the three 5/16-18 x 4.0 inch bolts into the engine camshaft front bolt holes.
    2. Using the bolts as a handle, carefully rotate and pull the engine camshaft out of the camshaft bearings.
    3. Remove the bolts from the front of the engine camshaft.
  11. Clean and inspect the camshaft and the bearings. Refer to Camshaft and Bearings Cleaning and Inspection .
    Fig 3: Removing Engine Camshaft
    G02077865Courtesy of GENERAL MOTORS CORP.
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