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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1018 (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 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the radiator. Refer to Radiator Replacement (EXC 8.1L) or Radiator Replacement (8.1L) in Engine Cooling.
  2. Remove the air conditioning (A/C) condenser. Refer to Condenser Replacement in Heating, Ventilation, and Air Conditioning.
  3. Remove the lifters. Refer to Valve Lifter Replacement .
  4. Remove the timing chain and the camshaft sprocket. Refer to Timing Chain, Sprockets, and/or Tensioner Replacement .
  5. Remove the balance shaft drive gear.
    6. Fig 1: View Of Balance Shaft Drive Gear
    GM9847Courtesy of GENERAL MOTORS CORP.
  6. Remove the camshaft retainer bolts and retainer.
    7. Fig 2: View Of Camshaft Retainer & Bolts
    GM188030Courtesy of GENERAL MOTORS CORP.
    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.
  7. 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.
    4. Clean and inspect the camshaft and/or bearings, if necessary. Refer to Camshaft and Bearings Cleaning and Inspection .
    8. Fig 3: Removing Engine Camshaft Bolts
    GM869751Courtesy of GENERAL MOTORS CORP.
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