GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Timing Chain and Sprocket Installation

Timing Chain and Sprocket Installation L26

Special Tools

J 45059 Angle Meter

For equivalent regional tools, refer to Special Tools.


    Object Number: 683965 Size: SH
  1. Install the crankshaft balancer key into the crankshaft keyway.

    2. The crankshaft balancer key should be parallel to the crankshaft or with a slight incline.

  2. Install the timing chain on the sprockets. Align the timing marks.

    3. Object Number: 192716 Size: SH
  3. Install the timing chain, the crankshaft sprocket, and the camshaft sprocket.

    4. Caution: Refer to Special Fastener Caution in the Preface section.

    Caution: Refer to Fastener Caution in the Preface section.

  4. Install the camshaft sprocket bolt and tighten the camshaft sprocket bolt to 100 N·m (74 lb ft). Use J 45059 meter to tighten the camshaft sprocket bolt an additional 90 degrees.

    5. Object Number: 154523 Size: SH
  5. Install the timing chain dampener and tighten the timing chain dampener bolt to 22 N·m (16 lb ft).