Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the battery. Battery Negative Cable Disconnection and Connection
Remove the oil fill cap.
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Lift up on the front of the intake manifold cover (1).
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Intake Manifold Cover (1) @ Upper Intake Manifold Bracket (2) - Remove
Starter - Remove - Starter Replacement (LSY)
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NOTE:
The timing pin (3) is installed into the flexplate for engine timing procedures, it can be damaged if torque is applied to the flexplate with the timing pin engaged. The timing pin must be placed in the retracted position using the handle (1) and twisting to locked position. The slide part (4) to be installed to the flexplate when torque is applied to the flexplate or crankshaft balancer bolt.

Install the EN-52476 Flywheel Lock and Alignment Tool (2).
Lower the vehicle.
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Disconnect the evaporative emission canister purge tube quick disconnects (1). Plastic Collar Quick Connect Fitting Service
Disconnect the evaporative emission canister purge tube (2) from the retainer (3).
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Disconnect the 2 electrical connectors from the camshaft position actuator solenoids.
Retainer (1) @ Timing Chain Upper Cover (2) - Unclip [6x]
Engine Wiring Harness (3) - Reposition
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Camshaft Position Actuator Valve Solenoid Bolt (4) - Remove [4x]
Camshaft Position Actuator Solenoid Valve Solenoid (1, 3) - Remove [2x]
Camshaft Position Actuator Magnet Gasket (2) - Remove and DISCARD [2x]
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Timing Chain Upper Cover Bolt - M6 (3) - Remove
Timing Chain Upper Cover Bolt - M5 (2) - Remove [11x]
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Timing Chain Upper Cover (2) - Remove
Timing Chain Upper Cover Seal (1) - Remove and DISCARD
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Retainer (1) - Unclip [3x]
Engine Wiring Harness (2) - Reposition
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Camshaft Cover Opening Plug (1) - Remove [2x]
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NOTE:
Rotate the engine using the crankshaft balancer until the locking pins of the EN-52462-A Camshaft Alignment Tool (1) drop into the slots in the camshafts.

EN-52462-A Camshaft Alignment Tool (1) - Install
Insert the bolt (2) of the EN-52462-A Camshaft Alignment Tool (1) into the camshaft carrier and tighten to secure the tool to the camshaft carrier.
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Lock the EN-52462-A Camshaft Alignment Tool (1) by rotating the levers in direction of arrow.
Raise the vehicle.
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NOTE:
The timing pin (3) is installed into the flexplate for engine timing procedures, it can be damaged if torque is applied to the flexplate with the timing pin engaged. The timing pin must be placed in the retracted position using the handle (1) and twisting to locked position. The slide part (4) to be installed to the flexplate when torque is applied to the flexplate or crankshaft balancer bolt.

Remove the slide (4) from the EN-52476 Flywheel Lock and Alignment Tool (2) from the automatic transmission flexplate and install the timing pin (3) by releasing the handle (1).
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Install the EN-52461 Cam Phaser Torque Reaction Tool (2) to the 2 EN-52461-100 Adapter Cam Phaser Torque Reaction Tool (3).
Hand tighten the 2 bolts (1, 4) of EN-52461 Cam Phaser Torque Reaction Tool.
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Install the EN-52461 Cam Phaser Torque Reaction Tool (5) along with the 2 EN-52461 Cam Phaser Torque Reaction Tool (2, 3) to the camshaft carrier.
Tighten the 2 bolts (1, 4) of EN-52461-100 Adapter Cam Phaser Torque Reaction Tool.
Tighten the 2 bolts from the EN-52461 Cam Phaser Torque Reaction Tool to the 2 EN-52461 Cam Phaser Torque Reaction Tool that were hand tightened.
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Install the EN-52461-1 Holder (1) to the holes in the camshaft sprocket.
Check that the EN-52461-1 Holder (1) sits correctly in the hole of the camshaft sprocket.
Loosen the specific camshaft sprocket bolt (2) for the side that is being replaced. To take tension off the actuator that is required for the specific camshaft bolt, use steps below.
1. Turn the exhaust side counter clockwise to 6 N.m (53 lb in) and tighten bolt (3) just enough to hold the EN-52461-1 Holder in place.
2. Turn the intake side counter clockwise to 6 N.m (53 lb in) and tighten bolt (4) just enough to hold the EN-52461-1 Holder in place.
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Install the EN-52436 Timing Chain Tensioner Retention Tool (1) at the timing chain (2) down far enough to hold pressure against the tensioner to hold it in place.
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NOTE:
Remove and DISCARD the one camshaft sprocket bolt that is required.

Camshaft Sprocket Bolt (1) - Remove and DISCARD