Removal Procedure

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

Remove the starter motor. Refer to Starter Replacement .
Remove the camshafts and rocker arms. Refer to Camshaft Replacement - Left Side , and Valve Rocker Arm Replacement - Left Side .

Fig 1: Flywheel Holding Fixture

Courtesy of GENERAL MOTORS COMPANY

NOTE:

If the EN 46106 Flywheel Holding Tool is not installed, the crankshaft may rotate. If the crankshaft rotates, disassembly and reassembly of the entire camshaft timing system may be required.

Install the EN 46106 Flywheel Holding Tool in order to prevent crankshaft rotation.
Remove the spark plug from the applicable cylinder. Refer to Spark Plug Replacement (LFX) .
Install the J 39313 Spark Plug Port Adapter to the applicable cylinder.
Connect the J 39313 Spark Plug Port Adapter to a compressed air source.

Fig 2: View Of Installed Valve Spring Compressor Tool

Courtesy of GENERAL MOTORS COMPANY

Install the EN 46110 On-Vehicle Valve Spring Compressor above the applicable cylinder as shown.
Tighten the EN 46110 On-Vehicle Valve Spring Compressor nut (2).

Fig 3: View Of Valve Spring Keepers

Courtesy of GENERAL MOTORS COMPANY

Remove the valve keepers.
Loosen the EN 46110 On-Vehicle Valve Spring Compressor nut.
Remove the valve spring retainer.

Fig 4: View Of Valve Spring

Courtesy of GENERAL MOTORS COMPANY

Remove the valve spring.

Fig 5: Valve Stem Oil Seal Removal/Installation

Courtesy of GENERAL MOTORS COMPANY

Use the EN 46116 Valve Stem Seal Remover/Installer (1) in order to remove the valve stem seal (2).