Camshaft Installation

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

Lubricate the camshaft journals and the bearings with clean engine oil.
Install 3 M8 - 1.25 x 100 mm (M8 - 1.25 x 4.0 in) bolts into the camshaft front bolt holes.

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 3 bolts from the front of the camshaft.

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

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

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 or debris.

Install the camshaft retainer and the bolts.
Tighten: Tighten the camshaft retainer bolts to 25 N.m (18 lb ft).

Fig 2: View Of Camshaft Retainer Plate

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 used again.
Lubricate the O-ring seal with clean engine oil.
Install the camshaft position (CMP) sensor and bolt.
Tighten: Tighten the CMP sensor bolt to 25 N.m (18 lb ft).

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

Courtesy of GENERAL MOTORS CORP.