Document ID: 2668798

Special Tools

EN 46101 - Spark Plug Tube Seal Guide

For equivalent regional tools, refer to Special Tools.

Removal Procedure

Remove the intake manifold cover (2). Refer to Intake Manifold Cover Replacement - Front.

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Remove the rear intake manifold cover retainers (1).

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Remove the rear intake manifold cover (2).

Warning: Refer to Battery Disconnect Warning.

Disconnect the battery ground cable from the battery. Refer to Battery Negative Cable Disconnection and Connection.
Remove the positive crankcase ventilation tubes. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
Remove the intake manifold (2). Refer to Intake Manifold Removal.

Click for full-size image

Note:

Unlock the ignition coil electrical connectors before disconnecting from the ignition coils.
Do not damage the ignition coil electrical connectors.

Disconnect the ignition coil electrical connectors (2) from the ignition coils.

Click for full-size image

Note: Use a suitable tool to detach the wiring harness (1) from the camshaft cover retainers (4) and lift the wiring harness (1) upward to detach the wiring harness from the camshaft cover lugs (3).

Detach the engine wiring harness (1) from the left bank camshaft cover.
Reposition and secure the wiring harness (1) away from the camshaft cover in order to provide clearance for removal of the camshaft cover.

Note:

Do not disconnect the engine front cover electrical connectors.
Use a suitable tool to detach the wiring harness (1) from the camshaft cover (2) and lift the wiring harness (1) upwards to detach the wiring harness from the camshaft cover (2).

Remove the wiring harness (1) from the front of the camshaft cover (2).

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Reposition and secure the wiring harness (1) away from the camshaft cover (2) in order to provide clearance for removal of the camshaft cover (2).
Remove the ignition coil to camshaft cover retaining bolts (1).

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Remove the ignition coils (2) from the camshaft cover.
Remove the camshaft cover retaining bolts (1).

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Remove the camshaft cover from the engine (3).
Disassemble the camshaft cover as necessary. Camshaft Cover Disassemble
Install the spark plug tube plugs EN 46101 - spark plug tube seal guide (1) to the spark plug tubes to prevent dirt and other contaminants from entering into the cylinders.

Click for full-size image

Installation Procedure

Assemble the camshaft cover as necessary. Camshaft Cover Assemble
Wipe the camshaft cover sealing surface on the left cylinder head with a clean, lint-free cloth.
Place a bead 8 mm (0.3150 in) in diameter by 4 mm (0.1575 in) in height of RTV sealant on the engine front cover split lines (1). Refer to Adhesives, Fluids, Lubricants, and Sealers for recommended sealant.

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Place the left camshaft cover into position onto the left cylinder head.

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Loosely install the left camshaft cover bolts.

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Caution: Refer to Fastener Caution

Tighten the left camshaft cover bolts in the sequence shown.

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Tighten the left camshaft cover bolts in the sequence to 10 Nm (89 lb in).
Tighten the left camshaft cover bolts a second pass in the sequence to 10 Nm (89 lb in).

Remove the EN 46101 - spark plug tube seal guide (1) from the spark plug tubes of the left cylinder head.

Click for full-size image
Install the ignition coils (2) to the camshaft cover.

Click for full-size image
Install the ignition coil to camshaft cover retaining bolts (1) and tighten to 10 Nm (89 lb in).

Note:

Ensure the wiring harness (1) is located on the locating lugs of the camshaft cover (2).
Listen for an audible click to confirm the correct installation of the wiring harness (1) to the camshaft cover (2).

Install the wiring harness (1) to the front of the camshaft cover (2).

Click for full-size image

Note:

Ensure the wiring harness (1) is located on the locating lugs of the camshaft cover.
Listen for an audible click to confirm the correct installation of the wiring harness (1) to the camshaft cover.

Install the engine wiring harness (1) to the left bank camshaft cover.

Click for full-size image

Note: After connecting the ignition coil connectors ensure that the ignition coil electrical connectors are locked to the ignition coils.

Connect the ignition coil electrical connectors (2) to the ignition coils.
Install the intake manifold (2). Refer to Intake Manifold Replacement.

Click for full-size image
Install the positive crankcase ventilation tubes. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
Install the rear intake manifold cover (2).

Click for full-size image
Install the rear intake manifold cover retainers (1).
Install the intake manifold cover (2). Refer to Intake Manifold Cover Replacement - Front.

Click for full-size image
Connect the battery ground cable to the battery. Refer to Battery Negative Cable Disconnection and Connection.

Document ID: 2668799

Special Tools

EN 46101 - Spark Plug Tube Seal Guide

For equivalent regional tools, refer to Special Tools.

Removal Procedure

Warning: Refer to Battery Disconnect Warning.

Disconnect the battery ground cable from the battery. Refer to Battery Negative Cable Disconnection and Connection.
Remove the intake manifold cover (2). Refer to Intake Manifold Cover Replacement - Front.

Click for full-size image
Remove the rear intake manifold cover retainers (1).

Click for full-size image
Remove the rear intake manifold cover (2).
Remove the positive crankcase ventilation tubes. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
Remove the intake manifold (2). Refer to Intake Manifold Removal.

Click for full-size image

Note:

Unlock the ignition coil electrical connectors before disconnecting from the ignition coils.
Do not damage the ignition coil electrical connectors.

Disconnect the ignition coil electrical connectors (4) from the ignition coils.

Click for full-size image

Note: Use a suitable tool to detach the wiring harness retainers from the camshaft cover.

Disconnect the wiring harness (2) from the camshaft cover.
Reposition and secure the wiring harness (2) away from the camshaft cover in order to provide clearance for removal of the camshaft cover.

Note:

Do not disconnect the engine front cover electrical connectors.
Use a suitable tool to detach the wiring harness (1) from the camshaft cover (2) and lift the wiring harness (1) upwards to detach the wiring harness from the camshaft cover (2).

Remove the wiring harness (1) from the front of the camshaft cover (2).

Click for full-size image
Reposition and secure the wiring harness (1) away from the camshaft cover (2) in order to provide clearance for removal of the camshaft cover (2).
Remove the ignition coil to camshaft cover retaining bolts (1).

Click for full-size image
Remove the ignition coils (2) from the camshaft cover (3).
Remove the camshaft cover to cylinder head retaining bolts (1).

Click for full-size image
Remove the camshaft cover (2) from the cylinder head (3).
Install the spark plug tube plugs EN 46101 - spark plug tube seal guide (1) to the spark plug tubes to prevent dirt and other contaminants from entering the cylinders.

Click for full-size image
Disassemble the camshaft cover as necessary. Camshaft Cover Disassemble
Inspect the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection.

Installation Procedure

Assemble the camshaft cover as necessary. Camshaft Cover Assemble
Wipe the camshaft cover sealing surface on the right cylinder head with a clean, lint-free cloth.

Note: Ensure the sealing surfaces of the cylinder head and camshaft cover are clean.

Place a 3 mm bead of GM approved sealant (1) on the join line between the engine front cover and the cylinder head.

Click for full-size image
Place the right camshaft cover (2) into position onto the right cylinder head (3).

Click for full-size image
Loosely install the right camshaft cover bolts (1).

Caution: Refer to Fastener Caution.

Tighten the right camshaft cover to cylinder head retaining bolts in the sequence to 10 Nm (89 lb in).

Click for full-size image
Remove the spark plug tube plugs EN 46101 - spark plug tube seal guide (1) from the spark plug tubes of the right cylinder head.

Click for full-size image
Install the ignition coils (2) to the camshaft cover (3).

Click for full-size image
Install the ignition coil to camshaft cover retaining bolts (1) and tighten to 10 Nm (89 lb in).

Note:

Ensure the wiring harness (1) is located on the locating lugs of the camshaft cover (2).
Listen for an audible click to confirm the correct installation of the wiring harness (1) to the camshaft cover (2).

Install the wiring harness (1) to the front of the camshaft cover (2).

Click for full-size image
Install the engine wiring harness (2) to the camshaft cover.

Click for full-size image

Note:

After connecting the ignition coil connectors ensure that the ignition coil electrical connectors are locked to the ignition coils.
Do not damage the ignition coil electrical connectors.

Connect the ignition coil electrical connectors (4) to the ignition coils.
Install the intake manifold (2). Refer to Intake Manifold Replacement.

Click for full-size image
Install the positive crankcase ventilation tubes. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement.
Install the rear intake manifold cover (2).

Click for full-size image
Install the rear intake manifold cover retainers (1).
Install the intake manifold cover (2). Refer to Intake Manifold Cover Replacement - Front.

Click for full-size image
Connect the battery ground cable to the battery. Refer to Battery Negative Cable Disconnection and Connection.

Item	Variant	Part #	Price
Valve Cover · Right	3 - Valve Cover	12653691	$157.60
Valve Cover · Left	3 - Valve Cover	12653688	$176.98
Right	3 - Valve Cover	12653691	$157.60
Left	3 - Valve Cover	12653688	$176.98

Operation	Task	Skill	Hours
Replace	One Bank Includes: R&I Valve Cover & Spark Plugs.	B	2.0
Replace	Both Banks Includes: R&I Valve Cover & Spark Plugs.	B	3.7

Valve Cover

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