- Install the threaded oil gallery plugs.
- Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the threads of the engine block heater.
- Install the engine block heater.
- Install the remaining oil gallery plugs using GM P/N 12346004 (Canadian P/N 10953480) or the equivalent.
- Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or the equivalent to the threads of the knock sensor.
- Install the knock sensors.
- Install the knock sensor heat shield and bolts, if applicable.
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.
Tighten
Tighten the oil gallery plugs to 30 N·m (22 lb ft).
Tighten
Tighten to 50 N·m (37 lb ft).
Tighten
Tighten the knock sensors to 18 N·m (13 lb ft).
Tighten
Tighten the knock sensor heat shield bolts to 50 N·m (37 lb ft).
