GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 902821  Size: SH

    Important: Do not remove the left bank idler sprocket.

  1. Remove the primary timing chain. Refer to Primary Camshaft Drive Chain and Sprockets Replacement .
  2. Remove the crankshaft sprocket. Refer to Crankshaft Sprocket Removal .
  3. Remove the oil pump bolts and the oil pump. Refer to Oil Pump Removal .

Installation Procedure


    Object Number: 902821  Size: SH
  1. Install the oil pump. Refer to Oil Pump Installation .
  2. Install the crankshaft sprocket. Refer to Crankshaft Sprocket Removal .
  3. Install the primary timing chain. Refer to Primary Camshaft Drive Chain and Sprockets Replacement .