GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: Any time the engine composite front cover is removed, the cover needs to be replaced upon reassembly. If the cover that was removed is reinstalled, oil leaks may develop.

  1. Remove the crankshaft balancer (external). Refer to Crankshaft Balancer Replacement .
  2. Remove the water pump. Refer to Water Pump Replacement in Engine Cooling.
  3. Remove the crankshaft position sensor. Refer to Crankshaft Position Sensor Replacement
  4. Loosen the oil pan and drop down.
  5. Remove the engine front cover bolts.
  6. Important: Use care when removing the engine front cover from the front of the oil pan seal.


    Object Number: 66452  Size: SH
  7. Clean the varnish and sludge build up from the engine front cover area.

Installation Procedure


    Object Number: 66452  Size: SH
  1. Install RTV to the lower corners of the front cover to aid in sealing.
  2. Install a new front cover and bolts. Use care when engaging the front of the oil pan sealing surface and gasket with the bottom of the front cover.
  3. Tighten
    Tighten the front cover to block bolts to 12 N·m (106 lb in).

    Notice: 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.

  4. Install the crankshaft position sensor. Refer to Crankshaft Position Sensor Replacement .
  5. Install the water pump. Refer to Water Pump Replacement in Engine Cooling.
  6. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .