Installation Procedure

Apply a small amount of grease to the crankshaft front cover oil seal sealing surface if reusing the seal.
Look to ensure that the front groove pin (crankshaft balancer) is installed in the proper location (if applicable).

The length and location of the pins must be the same as the original length and location

Fig 1: Front Groove Pin
Courtesy of GENERAL MOTORS CORP.

NOTE: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.
Apply a small amount of adhesive GM P/N 12346141 or equivalent onto the crankshaft balancer keyway in order to seal the crankshaft balancer keyway and crankshaft joint.
Align the keyway of the crankshaft balancer with the crankshaft balancer key.
Install the crankshaft balancer onto the end of the crankshaft.

Fig 2: Crankshaft Balancer, Keyway & Key
Courtesy of GENERAL MOTORS CORP.
Use the J 23523-F in order to press the crankshaft balancer onto the crankshaft.
1. 5.1. Install the J 23523-F plate and bolts onto the front of the crankshaft balancer.
  Tighten
  
  Tighten the J 23523-F plate bolts to 25 N.m (18 lb ft).
2. 5.2. Install the J 23523-F screw into the end for the crankshaft.
3. 5.3. Install the J 23523-F bearing, the washer, and the nut onto the screw.
4. 5.4. Rotate the J 23523-F nut clockwise until the crankshaft balancer hub is completely seated against the crankshaft position sensor reluctor ring.
Remove the J 23523-F.

Fig 3: Installing Crankshaft Balancer Using J 23523-F
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE .
Install the crankshaft pulley and bolts.
Tighten

Tighten the crankshaft pulley bolts to 58 N.m (43 lb ft).

Fig 4: Crankshaft Pulley & Bolts
Courtesy of GENERAL MOTORS CORP.
Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.

Fig 5: Ensuring Proper Position Of Crankshaft Balancer Washer
Courtesy of GENERAL MOTORS CORP.
Install the crankshaft balancer washer and the bolt.
Tighten

Tighten the crankshaft balancer bolt to 95 N.m (70 lb ft).

Fig 6: Crankshaft Balancer Washer & Bolt

Courtesy of GENERAL MOTORS CORP.

Install the drive belt. Refer to Drive Belt Replacement .
Install the fan shroud assembly. Refer to FAN SHROUD REPLACEMENT .
Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .