Removal Procedure

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

Remove the timing belt upper front cover. Refer to Timing Belt Upper Front Cover Removal .
Set the crankshaft balancer in the direction of the engine rotation to "1st cylinder TDC" (mark 1).

Fig 1: View Of Crankshaft TDC Position
Courtesy of GENERAL MOTORS COMPANY
Remove the camshaft cover. Refer to Camshaft Cover Removal .
Prepare the right half of the EN-6340 locking tool.

Fig 2: Front Panel And Bolts
Courtesy of GENERAL MOTORS COMPANY

NOTE: The right half of the EN-6340 locking tool can be recognized by the lettering "right", arrow, on the tool.
1. Remove the 2 bolts (2).
2. Remove the front panel (1) from the EN-6340 locking tool - right.
Insert the EN-6340 locking tool - left (1) and the EN-6340 locking tool - right (2) in the camshaft position actuator adjuster.

Fig 3: Spot Type Markings And Locking Tool
Courtesy of GENERAL MOTORS COMPANY
NOTE:
- The spot type marking (4) on the intake camshaft position actuator adjuster does not correspond to the groove of the EN-6340 locking tool - left (1) during this process, but must be somewhat above.
- The spot type marking (3) on the exhaust camshaft position actuator adjuster must correspond to the groove on EN-6340 locking tool - right (2).
Align the camshafts horizontally by the hexagon (arrows) until the EN-6628-A locking tool can be inserted in both camshafts.

Fig 4: Aligning Camshafts Horizontally
Courtesy of GENERAL MOTORS COMPANY

NOTE: If the EN-6628-A locking tool cannot be inserted, the timing must be set.
Insert the EN-6628-A locking tool (1) into the camshafts.

Fig 5: Locking Tool
Courtesy of GENERAL MOTORS COMPANY