Valve Rocker Arm and Push Rod Installation

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

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

Apply sealer GM P/N United States 12346004, GM P/N Canada 10953480, or equivalent to the valve rocker arm stud-to-cylinder head threads.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the push rod guides and valve rocker arm studs onto the cylinder head.
Tighten

Tighten the valve rocker arm studs to 50 N.m (37 lb ft).

Fig 1: Push Rod Guides & Studs
Courtesy of GENERAL MOTORS CORP.

Important: The 8.1 L engine uses different length intake and exhaust valve push rods.

The exhaust valve push rods (2) are longer than the intake valve push rods (1).
Install the valve push rods.

Fig 2: Pushrods
Courtesy of GENERAL MOTORS CORP.
Coat the valve rocker arm and valve rocker arm ball bearing surfaces with prelube GM P/N United States 1052367, GM P/N Canada 992869, or equivalent.
Install the valve rocker arms, the valve rocker arm balls and the valve rocker arm nuts.
Tighten

Tighten the valve rocker arm nuts slowly, to 25 N.m (19 lb ft), while guiding the tips of the rocker arms over the tips of the valves.

Fig 3: Valve Rocker Arms & Nuts
Courtesy of GENERAL MOTORS CORP.