GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 3.6L (LY7) 🢒 Oil Pump Replacement

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 .
  4. Perform the following steps as necessary:
    5. • Disassemble the oil pump. Refer to Oil Pump Disassemble .
    • Clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .

Installation Procedure
  1. Assemble the oil pump as necessary. Refer to Oil Pump Assemble .

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