Camshaft Installation

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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: Installing Camshaft Into Engine Block & Removing Bolts
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).
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.

Fig 2: Installing Camshaft Retainer And Bolts
Courtesy of GENERAL MOTORS CORP.
Install the camshaft sensor and bolt.
Tighten

Tighten the camshaft sensor bolt to 25 N.m (18 lb ft).

Fig 3: Installing Camshaft Sensor And Bolt
Courtesy of GENERAL MOTORS CORP.