Installation Procedure

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

IMPORTANT: Be sure to keep parts in order. Parts must be put back from where they were removed.

Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the valve rocker arm stud-to-cylinder head threads.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the pushrod guides and valve rocker arm studs.

Fig 1: View Of Valve Rocker Arm Studs & Pushrod Guides
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the studs to 50 N.m (37 lb ft).

IMPORTANT: The exhaust valve pushrods (2) are longer than the intake valve pushrods (1).

Fig 2: View Of Intake & Exhaust Valve Pushrods

Courtesy of GENERAL MOTORS CORP.

Install the valve pushrods.
Coat the valve rocker arm and valve rocker arm ball bearing surfaces with lubricant GM P/N 12345501 (Canadian P/N 992704), or equivalent.
Install the valve rocker arms, the valve rocker arm balls, and the valve rocker arm nuts.

Fig 3: View Of Valve Rocker Arms
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the nuts slowly to 35 N.m (26 lb ft) while guiding the tips of the rocker arms over the tips of the valves.
Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left or Valve Rocker Arm Cover Replacement - Right .