GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2008 🢒 Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Valve Rocker Arm Cover Replacement - Lower Left Side

Removal Procedure

    Object Number: 1335926 Size: SH
  1. Remove the upper left valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Upper Left Side .
  2. Remove the fuel injectors. Refer to Fuel Injector Replacement .
  3. Remove the lower valve rocker arm cover bolts.
  4. Remove the lower valve rocker arm cover.
  5. Remove the gasket from the lower valve rocker arm cover.
  6. Inspect the lower valve rocker arm cover gasket for damage, replace if necessary. Otherwise reuse the old gasket.
  7. If required, clean and inspect the lower valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection - Lower .

Installation Procedure

    Object Number: 1335926 Size: SH
  1. Install the lower valve rocker arm cover gasket.
  2. Install the lower valve rocker arm cover.
  3. Install the lower valve rocker arm cover bolts.

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


    Object Number: 1411029 Size: SH
  4. Tighten the lower valve rocker arm cover bolts in the sequence shown.

    5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  5. Install the fuel injectors. Refer to Fuel Injector Replacement .
  6. Install the upper left valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Upper Left Side .