Removal Procedure

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

Remove the timing chain lower cover. Refer to Timing Chain Lower Cover Replacement .
Courtesy of GENERAL MOTORS COMPANY

Tension the oil pump drive chain tensioner (1) in arrow direction.
Install the EN-50513 fixing pin (2).
Courtesy of GENERAL MOTORS COMPANY

Loosen the oil pump sprocket bolt (1), by counterhold with the EN-51142 holding tool (1).
Courtesy of GENERAL MOTORS COMPANY

Remove and DISCARD the oil pump sprocket bolt (4).
Remove the oil pump sprocket (3) from the oil pump shaft (5).
Remove the oil pump drive chain (2) from the oil pump drive chain sprocket (1).