GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Secondary Air Injection Check Valve and Check Valve Pipe Replacement - Bank 2

Removal Procedure

    Object Number: 360620 Size: SH
  1. Remove the AIR pipe assembly bolts.

    2. Object Number: 360619 Size: SH
  2. Remove the AIR pipe assembly and gasket.

    3. Object Number: 360618 Size: SH

    Important: Perform this last step only if the check valve needs replacement.

  3. Separate the check valve from the AIR pipe by loosening the retainer clip and pipe locknut.

Installation Procedure

    Object Number: 360618 Size: SH

    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.

    Important: Skip the first step if the check valve has not been removed.

  1. Connect the AIR pipe and check valve by installing the retainer clip and tightening the pipe locknut.

    2. Tighten
    Tighten the locknut to 10 N·m (89 lb in).


    Object Number: 360619 Size: SH

    Important: Clean the manifold mounting surface of any debris or carbon buildup. An airhole could adversely effect vehicle emissions and driveability.

  2. Install the AIR pipe and gasket.

    3. Object Number: 360620 Size: SH
  3. Install the AIR pipe assembly bolts.

    4. Tighten
    Tighten the mounting bolts to 25 N·m (18 lb ft).

    Tighten
    Tighten the AIR pipe assembly retainer bolt to 40 N·m (30 lb ft).