GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Valve Rocker Arm Cover Replacement - Left Side

Removal Procedure
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

    2. Object Number: 153577 Size: SH
  2. Remove the left engine lift bracket bolt and nut from the engine lift bracket.
  3. Remove the left engine lift bracket from the cylinder head.
  4. Remove the right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement - Right Side .
  5. Remove the left spark plug wires from the left spark plugs. Refer to Spark Plug Wire Replacement .
  6. Remove the left spark plug wire cover from the left valve rocker arm cover.

    7. Object Number: 406018 Size: SH
  7. Remove the left valve rocker arm cover bolts.

    8. Important: If the valve rocker arm cover adheres to the cylinder head, remove the valve rocker arm cover by bumping the end of the valve rocker arm cover with palm of hand or with a soft rubber mallet.

  8. Remove the left valve rocker arm cover.
  9. Remove the left valve rocker arm cover gasket.
  10. Clean the valve rocker arm mating surfaces.
  11. Clean the valve rocker arm cover bolts of all thread locking adhesive.

Installation Procedure

    Object Number: 406018 Size: SH
  1. Install the new valve rocker arm cover gasket. Make sure that valve rocker arm cover gasket is seated properly in the valve rocker arm cover groove.
  2. Install the left valve rocker arm cover.
  3. Apply threadlock compound to the valve rocker arm cover bolt threads. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the left valve rocker arm cover bolts.

    5. Tighten
    Tighten the left valve rocker arm cover bolts to 10 N·m (89 lb in).

  5. Install the left spark plug wire cover to the left valve rocker arm cover.
  6. Install the left spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement .
  7. Install the right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement - Right Side .

    8. Object Number: 153577 Size: SH
  8. Install the left engine lift bracket to the cylinder head.
  9. Install the left engine lift bracket bolt and the nut.

    10. Tighten
    Tighten the engine lift bracket bolt and the nut to 30 N·m (22 lb ft).

  10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  11. Check and fill the crankcase as necessary.
  12. Inspect for oil leaks.