GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 HUMMER 🢒 2006 🢒 H3 🢒 Engine 🢒 Engine Controls - 3.5L (L52) 🢒 Camshaft Cover Replacement

Removal Procedure

    Object Number: 1350694 Size: SH
  1. Remove the intake manifold. Refer to Intake Manifold Replacement .
  2. Remove the ignition coils. Refer to Ignition Coil Replacement in Engine Controls - 3.5L (L52).
  3. Disconnect the following electrical connectors from the camshaft cover:
    4. • The engine coolant temperature (ECT) sensor (1)
    • The fuel injector (2)
    • The heated oxygen sensor (HO2S) (5)
  4. Remove the fuel pressure regulator screw, in order to gain clearance to remove the camshaft cover.

    5. Object Number: 858169 Size: SH
  5. Remove the camshaft cover bolts.
  6. Remove the camshaft cover from the cylinder head.
  7. Remove and discard the seals from the camshaft cover.
  8. Clean and inspect the cylinder head sealing surface.
  9. Clean and inspect the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection .

Installation Procedure

    Object Number: 858169 Size: SH
  1. Install a NEW camshaft cover seal into the camshaft cover groove.
  2. Install NEW ignition control module seals into the camshaft cover grooves.
  3. Position the camshaft cover to the cylinder head.

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

  4. Install the camshaft cover bolts.

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

  5. Install the fuel pressure regulator screw.

    6. Tighten
    Tighten the screw to 8 N·m (71 lb in).


    Object Number: 1350694 Size: SH
  6. Connect the following electrical connectors to the camshaft cover:
    7. • The ECT sensor (1)
    • The fuel injector (2)
    • The HO2S (5)
  7. Install the ignition coils. Refer to Ignition Coil Replacement in Engine Controls - 3.5L (L52).
  8. Install the intake manifold. Refer to Intake Manifold Replacement .