Balance Shaft Removal

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Remove the balance shaft drive gear.

Fig 1: Removing Balance Shaft Drive Gear
Courtesy of GENERAL MOTORS CORP.

Important:

The balance shaft drive and balance shaft driven gears are serviced as a set. The set includes the balance shaft driven gear bolt.
Remove the balance shaft driven gear bolt from the balance shaft.
1. 2.1. Use a wrench in order to secure the balance shaft.
  Place the wrench onto the balance shaft near to the balance shaft front bearing.
2. 2.2. Remove the balance shaft bolt.
3. 2.3. Remove the wrench from the balance shaft.
Fig 2: Removing Balance Shaft Driven Gear Bolt From Balance Shaft
Courtesy of GENERAL MOTORS CORP.
Remove the balance shaft driven gear from the balance shaft.
Remove the bolts and the balance shaft retainer.

Fig 3: Removing Bolts And Balance Shaft Retainer
Courtesy of GENERAL MOTORS CORP.

Important:

The balance shaft and the balance shaft front bearing are serviced only as a package. Do not remove the balance shaft front bearing from the balance shaft.
Use a soft-faced hammer in order to remove the balance shaft from the engine block.

Fig 4: Removing Balance Shaft From Engine Block
Courtesy of GENERAL MOTORS CORP.