GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Chevy C Silverado - 2WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Secondary Air Injection Solenoid Valve Replacement

Removal Procedure

    Object Number: 353967 Size: SH
  1. Disconnect the AIR solenoid (2) electrical connector.

    2. Object Number: 390309 Size: SH

    Important: Observe the position of the vacuum lines. The vacuum source port is on the same side as the mounting bracket

  2. Remove the vacuum hoses from the AIR Solenoid vacuum ports (3, 4).
  3. Remove the fastener securing the AIR solenoid mounting bracket (2) to the base.
  4. Remove the AIR solenoid (1).

Installation Procedure

    Object Number: 390309 Size: SH
  1. Install the AIR solenoid.
  2. Apply GM Threadlocker P/N 9985773 or equivalent to threads of fastener.

    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 fastener securing the AIR solenoid mounting bracket to the base. Ensure the locating tab on the mounting bracket (2) is seated properly.

    4. Tighten
    Tighten the AIR solenoid mounting fastener to 4 N·m (35 in lb).

  4. Install the vacuum hoses to the AIR Solenoid vacuum ports (3, 4).

    5. Object Number: 353967 Size: SH
  5. Connect the AIR solenoid (2) electrical connector.