Camshaft Installation

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

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

Courtesy of GENERAL MOTORS CORP.

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 2: View Of Camshaft Retainer Plate

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

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.

Fig 3: Identifying Camshaft Retainer Bolts

Courtesy of GENERAL MOTORS CORP.

Tighten the camshaft retainer bolts.
Tighten:
- Tighten the hex head bolts (3) to 25 N.m (18 lb ft).
- Tighten the TORX® head bolts (4) to 15 N.m (11 lb ft).

Fig 4: View Of Camshaft Position (CMP) Sensor & Bolt

Courtesy of GENERAL MOTORS CORP.

Inspect the camshaft position (CMP) 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 CMP sensor and bolt.
Tighten: Tighten the CMP sensor bolt to 25 N.m (18 lb ft).