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Home >> Chevrolet >> 2005 >> Chevy Express H1500, Van Passenger >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Camshaft Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Installing & Removing Engine Camshaft Front Bolts
    GM5147Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Whenever a new camshaft is installed, do the following procedures:
    • Change the engine oil.
    • Change the engine oil filter.
    • Add GM Engine Oil Supplement GM P/N 1052367 (Canadian P/N 992367) or the equivalent to the engine oil.
  1. Apply clean engine oil GM P/N 12345610 (Canadian P/N 993193) or equivalent, or engine oil supplement GM P/N 1052367 (Canadian P/N 992367) or equivalent to the following components:
    • The engine camshaft lobes
    • The camshaft bearing journals
    • The camshaft bearings
  2. Install three 5/16-18 x 4.0 inch bolts into the engine camshaft front bolt holes.
  3. Use the bolts as a handle in order to install the engine camshaft.
  4. Remove the 3 bolts from the front of the engine camshaft.
    5. Fig 2: View Of Camshaft Retainer & Bolts
    GM188030Courtesy of GENERAL MOTORS CORP.
  5. If reusing the fasteners, apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the camshaft retainer bolts.
    6. NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the camshaft retainer and bolts.

    Tighten:  Tighten the camshaft retainer bolts to 12 N.m (106 lb in).

  7. Install the balance shaft drive gear. Refer to Balance Shaft Replacement  for alignment of the balance shaft drive gear and the driven gear.
  8. Install the timing chain and camshaft sprocket. Refer to Timing Chain, Sprockets, and/or Tensioner Replacement .
  9. Install the valve lifters. Refer to Valve Lifter Replacement .
  10. Install the A/C condenser. Refer to Condenser Replacement in Heating, Ventilation, and Air Conditioning.
  11. Install the engine cooling fan. Refer to Fan Clutch Replacement in Engine Cooling.
  12. Install the radiator. Refer to Radiator Replacement in Engine Cooling.
  13. Fill the engine cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  14. Recharge the air conditioning system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation, and Air Conditioning.
  15. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  16. Connect the battery negative cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
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