Tools Required

J 22102 Front Cover Aligner and Seal Installer

Important: Replacing either of the following will affect timing:

•	The timing chain

•	The timing gears

•	The front cover

•	The Crankshaft Position (CKP) sensor

•	The crankshaft

It will then be necessary to reprogram TDC Offset (Recovery) into the PCM.
1. Clean the front cover and the block sealing surfaces, in order to ensure that they are free from oil.




Important: Perform TDC Offset Recovery procedure if the timing chain, timing gears, engine front cover, crankshaft position sensor, crankshaft or other components affecting the timing are replaced.

2. Install the front crankshaft oil seal using the J 22102 with the open end of the seal facing the inside cover.
3. Coat the seal lips with grease.



4. Apply a 2 mm (3/32 in) bead of anaerobic sealant GM P/N United States 1052942, GM P/N Canada 10953466, or the equivalent, to the front cover sealing area.



5. Install the front cover to the engine.

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.

6. Install the front cover bolts.

Tighten
Tighten the front cover bolts to 45 N·m (33 lb ft).