Tools Required

EN 46337  Camshaft Sprocket/Crankshaft Balancer Holder. See Special Tools .

Fig 1: Aligning Mark On The Crankshaft Balancer With Pointer On Front Cover
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: If the timing belt is to be removed, the crankshaft balancer must be rotated to position number 1 piston at top dead center (TDC) of compression stroke to avoid valve-to-piston contact.
1. Rotate the balancer and align the white mark on the balancer (1) with the locating tab (2) on the front cover.
Fig 2: Aligning The Upper Cover Mark With Mark On Camshaft (Number 1 Cylinder)
Courtesy of GENERAL MOTORS CORP.
2. Inspect for cylinder number 1 piston at TDC. The pointer on the upper cover (2) will be aligned with the number 1 cylinder TDC mark (1) on the camshaft sprocket.
Fig 3: Using Breaker Bar To Hold The Balancer
Courtesy of GENERAL MOTORS CORP.
3. Use the EN 46337  and a breaker bar in order to retain the balancer. See Special Tools .
Fig 4: View Of Bolt, Balancer & Guide
Courtesy of GENERAL MOTORS CORP.
4. Remove the bolt (227), balancer (228) and guide (236).