Valve Rocker Arm and Push Rod Installation

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.

Install the valve pushrods.

Fig 2: Valve Rocker Arm Supports

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

Install the valve rocker arm supports.

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: Valve Rocker Arm Assemblies

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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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IMPORTANT: Rotate the number 1 cylinder to top dead center (TDC) of the compression stroke. The engine front cover has 2 alignment tabs and the crankshaft balancer has 2 alignment marks which are spaced 90 degrees apart that are used for positioning the number 1 piston at TDC.

Rotate the crankshaft balancer clockwise until the alignment marks on the crankshaft balancer are aligned with the tabs on the engine front cover, 1 with 2 and 3 with 4. At that point the number 1 piston should be at TDC of the compression stroke.

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 valve rocker arm bolts to 30 N.m (22 lb ft).