Installation Procedure

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

IMPORTANT: If camshaft replacement is required, the valve lifters must also be replaced.

Fig 1: View Of Bolts installed In Camshaft Front Bolt Holes

Courtesy of GENERAL MOTORS CORP.

Lubricate the camshaft journals and the bearings with clean engine oil.
Install three M8-1.25 x 100 mm (M8-1.25 x 4.0 in) bolts to the bolt holes in the front of the camshaft.
NOTE: All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.
Using the bolts as a handle, carefully install the camshaft into the engine block.
Remove the three bolts from the front of the camshaft.

Fig 2: View Of Camshaft Retainer Plate

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Install the retainer plate with the sealing gasket facing the engine block.
The gasket surface on the engine block should be clean and free of dirt and/or debris.

NOTE: Refer to Fastener Notice .

Install the camshaft retainer and bolts.
Tighten: Tighten the camshaft retainer bolts to 25 N.m (18 lb ft).
Install the camshaft sprocket and position the timing chain.
Install the camshaft sprocket bolts.
Tighten: Tighten the bolts to 35 N.m (26 lb ft).

Fig 3: View Of Camshaft Position (CMP) Sensor & Bolt

Courtesy of GENERAL MOTORS CORP.

Inspect the camshaft sensor O-ring seal. If the O-ring seal is not cut or damaged, it may be reused.
Lubricate the O-ring seal with clean engine oil.
Install the camshaft sensor and bolt.
Tighten: Tighten the camshaft sensor bolt to 25 N.m (18 lb ft).
Install the valve lifters. Refer to Valve Lifter Replacement .
Install the front cover. Refer to Engine Front Cover Replacement .
Install the radiator support. Refer to Radiator Support Replacement .