Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

Install the primary camshaft drive chain left upper guide upward through the front cover area, aligning the guide to the threaded holes in the cylinder head and block.
CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.
Install the primary camshaft drive chain left upper guide bolts.
Tighten

Tighten the primary camshaft drive chain guide bolts to 25 N.m (18 lb ft).

Fig 1: Installing Primary Camshaft Drive Chain Left Upper Guide
Courtesy of GENERAL MOTORS CORP.

Important: Ensure that the chain guide access plug has an O-ring installed.
Install the chain guide access plug (3).
Tighten

Tighten the chain guide access plug to 5 N.m (44 lb in).

Fig 2: Installing Chain Guide Access Plug
Courtesy of GENERAL MOTORS CORP.

Important: Ensure the relationship between the primary camshaft drive chain and balance shaft sprocket remain in a timed sequence.
Rotate the balance shaft clockwise in order to transfer the chain slack from the left upper guide to the right upper guide.

Fig 3: Locating Balance Shaft
Courtesy of GENERAL MOTORS CORP.
Transfer the chain slack from the primary camshaft drive chain upper guide area to the primary camshaft drive chain tensioner area by moving the chain links counter-clockwise around the right intake sprocket.
Install the primary camshaft drive chain tensioner. Refer to Primary Camshaft Drive Chain Tensioner Replacement .

Fig 4: Locating Chain Links Around Right Intake Sprocket
Courtesy of GENERAL MOTORS CORP.