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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 992 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Camshaft Replacement >> Installation Procedure

Installation 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.
    IMPORTANT: Whenever a new camshaft is installed, perform the following:
    • Change the engine oil and filter.
    • Add engine oil supplement GM P/N 1052367 (Canadian P/N 992869), or equivalent, to the engine oil.
  1. Apply lubricant GM P/N 12345501 (Canadian P/N 992704), or equivalent, or engine oil supplement GM P/N 1052367 (Canadian P/N 992869), 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. 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.
  3. Using the bolts as a handle, install the engine camshaft.
  4. Remove the 3 bolts from the front of the engine camshaft.
    5. Fig 1: Installing Engine Camshaft Bolts
    GM869751Courtesy of GENERAL MOTORS CORP.
  5. If reusing the fasteners, apply Threadlocker GM P/N 12345382 (Canadian P/N 10953488), 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 bolts to 12 N.m (106 lb in).

    7. Fig 2: View Of Camshaft Retainer & Bolts
    GM188030Courtesy of GENERAL MOTORS CORP.
  7. Install the balance shaft drive gear. Refer to Balance Shaft Installation , 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 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 radiator. Refer to Radiator Replacement (EXC 8.1L) or Radiator Replacement (8.1L) in Engine Cooling.
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