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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1063 (Engine Mechanical - 4.3L) >> Repair Instructions - On Vehicle >> Camshaft Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Balance Shaft Drive Gear
    GM9847Courtesy of GENERAL MOTORS CORP.
  1. Remove the radiator. Refer to Radiator Replacement (4.3, 4.8, 5.3, and 6.0L) .
  2. Remove the air conditioning (A/C) condenser. Refer to Condenser Replacement .
  3. Remove the lifters. Refer to Valve Lifter Replacement .
  4. Remove the timing chain and the camshaft sprocket. Refer to Camshaft Timing Chain, Sprocket, and Tensioner Replacement .
  5. Remove the balance shaft drive gear.
    6. Fig 2: View Of Camshaft Retainer & Bolts
    GM188030Courtesy of GENERAL MOTORS CORP.
  6. Remove the camshaft retainer bolts and retainer.
    7. Fig 3: Using Bolts To Handle Camshaft
    GM869751Courtesy 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 .
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