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Replied on January 01, 2010

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Camshaft Cover Replacement - Left Side

Removal Procedure

Remove the intake manifold. Refer to Intake Manifold Replacement .

Remove the left ignition coil. Refer to Ignition Coil Replacement - Bank 2 in Engine Controls-2.6L and 3.2L.

Disconnect the following from the front of the throttle body heater inlet hose/pipe bracket.

• The camshaft position (CMP) sensor connector

• The left knock sensor connector (1)

• The vacuum pipe retainer

Disconnect the heated oxygen sensor connector (2) from the rear of the throttle body heater inlet hose/pipe (3).

Remove the bolt securing the throttle body heater inlet hose/pipe to the engine rear lift bracket and position aside.

Remove the left camshaft cover bolts (1).

Remove the left camshaft cover (2) from the cylinder head.

Important: Ensure all 8 sealing O-ring seals (4) are accounted for. The O-ring seals (4) may stick to the camshaft bearing caps or they may fall into the oil return journals in the cylinder head.

Remove the left camshaft cover seals (3).

Clean and inspect the cylinder head sealing surface.

Clean and inspect the left camshaft cover. Refer to Camshaft Cover Cleaning and Inspection .

Installation Procedure

Lightly coat the new O-ring seals with clean engine oil prior to installation to assist in holding the O-ring seals to the camshaft cover.

Install the camshaft cover seals to the camshaft cover.

Apply a thin coat of silicone sealer GM P/N 12346286 (Canadian P/N 10953472), to the corners of the front and back of the seals.

Apply a 3 mm (0.12 in) bead of silicone sealer GM P/N 12346286 (Canadian P/N 10953472), at the front and rear of the camshaft cover between the seals.

Position the camshaft cover (2) to the cylinder head, aligning the datum with the hole in the cylinder head.

Notice: Refer to Fastener Notice in the Preface section.

Install the camshaft cover bolts (1).

Tighten

Tighten the camshaft cover bolts to 8 N·m (71 lb in).

Install the bolt securing the throttle body heater inlet hose/pipe to the engine rear lift bracket.

Tighten

Tighten the throttle body heater inlet hose/pipe bolts to 9 N·m (80 lb in).

Connect the heated oxygen sensor connector (2) to the rear of the throttle body heater inlet hose/pipe (3).

Connect the following to the front of the throttle body heater inlet hose/pipe bracket.

• The CMP sensor connector

• The left knock sensor connector (1)

• The vacuum pipe retainer

Install the left ignition coil. Refer to Ignition Coil Replacement - Bank 2 in Engine Controls-2.6L and 3.2L.

Install the intake manifold. Refer to Intake Manifold Replacement .

Camshaft Cover Replacement - Right Side

Removal Procedure

Remove the intake manifold. Refer to Intake Manifold Replacement .

Remove the right ignition coil. Refer to Ignition Coil Replacement - Bank 1 in Engine Controls-2.6L and 3.2L.

Remove the knock sensor wire harness bolt and bracket.

Remove the right camshaft cover bolts (1).

Remove the right camshaft cover (2) from the cylinder head.

Important: Ensure all 8 sealing O-ring seals (3) are accounted for. The O-ring seals (3) may stick to the camshaft bearing caps or they may fall into the oil return journals in the cylinder head.

Remove the right camshaft cover seals (4).

Clean and inspect the cylinder head sealing surface.

Clean and inspect the right camshaft cover. Refer to Camshaft Cover Cleaning and Inspection .

Installation Procedure

Lightly coat the new O-ring seals with clean engine oil prior to installation to assist in holding the O-ring seals to the camshaft cover.

Install the camshaft cover seals to the camshaft cover.

Apply a thin coat of silicone sealer GM P/N 12346286 (Canadian P/N 10953472), to the corners of the front and back of the seals.

Apply a 3 mm (0.12 in) bead of silicone sealer GM P/N 12346286 (Canadian P/N 10953472), at the front and rear of the camshaft cover between the seals.

Position the camshaft cover (2) to the cylinder head, aligning the datum with the hole in the cylinder head.

Notice: Refer to Fastener Notice in the Preface section.

Install the camshaft cover bolts (1).

Tighten

Tighten the camshaft cover bolts to 8 N·m (71 lb in).

Install the knock sensor wire harness bracket and bolt.

Tighten

Tighten the knock sensor wire harness bracket bolt to 8 N·m (71 lb in).

Install the right ignition coil. Refer to Ignition Coil Replacement - Bank 1 in Engine Controls-2.6L and 3.2L.

Install the intake manifold. Refer to Intake Manifold Replacement .

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