GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2010 🢒 Envoy - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.2L 🢒 Intake Manifold Installation

    Object Number: 637631 Size: SH
  1. Install a new intake manifold gasket.

    2. Caution: Refer to Fastener Caution in the Preface section.

  2. Install the intake manifold and bolts. Tighten the intake manifold bolts from the inside out to 10 N·m (89 lb in).

    3. Object Number: 637635 Size: SH
  3. Lubricate the inner diameter of the ends of PCV hose with GM P/N 12345884, (Canadian P/N 5728223) or equivalent.
  4. Install the PCV hose.

    5. Object Number: 637642 Size: SH
  5. Install a new throttle control module gasket.
  6. Install the throttle control module.
  7. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the throttle control module bolt threads.
  8. Install the throttle control module bolts. Tighten the throttle control module bolts to 10 N·m (89 lb in).