GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Envoy - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.2L 🢒 Camshaft Cover Installation

    Object Number: 637618 Size: SH
  1. Install NEW camshaft cover grommets and camshaft cover bolts if they are serviced with the grommets.
  2. Install a new camshaft cover seal.

    3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the camshaft cover and bolts.

    4. Tighten
    Tighten the camshaft cover bolts to 10 N·m (89 lb in).


    Object Number: 637619 Size: SH
  4. Install new ignition control module seals.
  5. Install the ignition control modules and bolts.

    6. Tighten
    Tighten the ignition control module bolts to 10 N·m (89 lb in).