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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 >> Off-Vehicle Repair Instructions >> Engine Front Cover Installation

Engine Front Cover Installation

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.

Important:  Once the composite engine front cover is removed DO NOT reinstall the engine front cover. Always install a NEW engine front cover.

  1. Install the NEW engine front cover.
    CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  2. Install the engine front cover bolts.

    Tighten 

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

    Fig 1: Installing Engine Front Cover
    G02078242Courtesy of GENERAL MOTORS CORP.

    Important:  DO NOT reuse the original crankshaft position sensor seal, O-ring. When installing the crankshaft position sensor be sure the crankshaft position sensor is fully seated and held stationary in the engine front cover crankshaft position sensor bore. A crankshaft position sensor that is not completely seated will cock in the engine front cover and may result in erratic engine operation.

  3. Lubricate the NEW crankshaft position sensor seal, O-ring, with clean engine oil.
  4. Install the NEW crankshaft position sensor seal, O-ring, onto the crankshaft position sensor.
    Fig 2: Installing Crankshaft Position Sensor Seal
    G02078243Courtesy of GENERAL MOTORS CORP.
  5. Install crankshaft position sensor until fully seated into the engine front cover.
  6. Install crankshaft position sensor bolt.

    Tighten 

    Tighten the crankshaft position sensor bolt to 8 N.m (71 lb in).

    Fig 3: Installing Crankshaft Position Sensor & Bolt
    G02078244Courtesy of GENERAL MOTORS CORP.