Installation Procedure

WARNING: This page is about a different variant/trim than selected.

Fig 1: View Of Valve Pushrods

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IMPORTANT: Be sure to keep parts in order. Parts must be reinstalled into the original location and position.

Fig 2: Installing Rocker Arm Supports

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IMPORTANT: Be sure that the arrow on the valve rocker arm support is in the up position.

Fig 3: Pushrod Socket, Roller Pivot & Valve Stem Tip

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Apply prelube GM P/N 12345501 (Canadian P/N 992704) or equivalent to the following valve rocker arm contact surfaces:
- Valve pushrod socket (1)
- Roller pivot (2)
- Valve stem tip (3)

Fig 4: Installing Rocker Arms

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Install the valve rocker arm assemblies as follows:
1. Finger start the bolt at location (1)
2. Finger start the bolt at location (2)
3. Finger start the bolt at location (3)
4. Finger start the remaining valve rocker arm bolts

Fig 5: View Of Crankshaft Balancer Alignment Mark & Engine Front Cover Alignment Tab

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Rotate the crankshaft balancer to position the crankshaft balancer alignment mark (1) 57-63 degrees clockwise or counterclockwise from the engine front cover alignment tab (2).

NOTE: Refer to Fastener Notice in Cautions and Notices.

IMPORTANT: Once the valve rocker arm assemblies are installed and properly torqued, no additional valve lash adjustment is required.

Tighten the valve rocker arm bolts.
Tighten: Tighten the valve rocker arm bolts to 30 N.m (22 lb ft).
Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left or Valve Rocker Arm Cover Replacement - Right .