Oil Pump Drive Chain and Sprocket Removal

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Special Tools

EN-51142 Oil Pump Sprocket Unit Holding Tool

For equivalent regional tools, refer to Special Tools .

Courtesy of GENERAL MOTORS COMPANY

Loosen the oil pump sprocket bolt (2), 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).