Removal Procedure

WARNING: This page is about a different variant/trim than selected.

Remove the intake manifold. Refer to Intake Manifold Replacement
Remove the exhaust manifold. Refer to Exhaust Manifold Replacement (LH7)
Remove Camshaft Sprocket. Refer to Camshaft Sprocket Replacement
Remove Glow Plugs (Qty: 4). Refer to Glow Plug Replacement

Fig 1: Fuel Injection Fuel Rail And Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove Fuel Injection Fuel Rail Bolts (1) (Qty: 2)
Remove Fuel Injection Fuel Rail (2)

Fig 2: Camshaft Sprocket Fixing Tool

Courtesy of GENERAL MOTORS COMPANY

Remove the EN-51143 fixing tool (1).

Fig 3: Camshaft Bearing Rear Cap And Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove the 4 camshaft bearing rear cap bolts (1).
Remove Camshaft Bearing Rear Cap (2)

Fig 4: Mark Exhaust Camshaft Sprocket And Intake Camshaft Sprocket With Paint Marks

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Marking the camshaft sprockets.

Marking the exhaust camshaft sprocket and intake camshaft sprocket with paint marks (1).

Fig 5: Split Intake Camshaft Sprocket Fixing Tool

Courtesy of GENERAL MOTORS COMPANY

Install the EN-50509 fixing tool (1) to the exhaust camshaft sprocket (2).

Fig 6: Intake Camshaft Bearing Cap Bolt Loosening Sequence

Courtesy of GENERAL MOTORS COMPANY

Loosen the 8 intake camshaft bearing cap bolts in sequence as shown.

Fig 7: Intake Camshaft Bearing Caps And Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove the 8 intake camshaft bearing cap bolts (1).
Remove the 4 intake camshaft bearing caps (2) and lay aside in the order as they were removed.

Fig 8: Intake Camshaft

Courtesy of GENERAL MOTORS COMPANY

Remove Intake Camshaft (1)

Fig 9: Exhaust Camshaft Bearing Cap Bolt Loosening Sequence

Courtesy of GENERAL MOTORS COMPANY

Loosen the 8 exhaust camshaft bearing cap bolts in sequence as shown.

Fig 10: Exhaust Camshaft Bearing Caps And Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove the 8 exhaust camshaft bearing cap bolts (1).
Remove the 4 exhaust camshaft bearing caps (2) and lay aside in the order as they were removed.

Fig 11: Exhaust Camshaft With Bore Of Camshaft Sprocket Upwards

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Do not remove the EN-50509 fixing tool.

Remove Exhaust Camshaft (1)

Fig 12: Bearing Bracket

Courtesy of GENERAL MOTORS COMPANY

Remove the bearing bracket (1).

Fig 13: Valve Lifter Roller Assemblies

Courtesy of GENERAL MOTORS COMPANY

Remove the 16 valve lifter with valve lifter roller (1) and lay aside in the order as they was removed.

Fig 14: Upper Timing Chain Upper Guide And Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove the upper timing chain upper guide bolt (2).
Loosen the timing chain upper guide (1) by loosen the lower bolt (3).

Fig 15: Engine Mount Bracket Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove Engine Mount Bracket Bolts (1) (Qty: 2)

Fig 16: Outer Cylinder Head Bolts

Courtesy of GENERAL MOTORS COMPANY

Remove and DISCARD the 2 outer cylinder head bolts (1).

Fig 17: Cylinder Head Bolt Loosening Sequence

Courtesy of GENERAL MOTORS COMPANY

Loosen the 10 cylinder head bolts in sequence as shown step by step.

Fig 18: Cylinder Head, Bolts, Gasket And Guide Sleeves

Courtesy of GENERAL MOTORS COMPANY

Remove and DISCARD Cylinder Head Bolts (1) (Qty: 10)

NOTE:

Ensure the guide sleeves (4) are properly seated in the engine block.

Remove Cylinder Head (2)
Remove and DISCARD Cylinder Head Gasket (3)
Disassemble the cylinder head. Refer to Cylinder Head Disassemble