GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 TopKick C-Series (Conventional) C6/C7/C8 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Vacuum Pump Assembly Replacement

Removal Procedure

    Object Number: 790274 Size: SH
  1. Disconnect the vacuum hoses.
  2. Disconnect the vacuum pump electrical connector.
  3. Remove the vacuum pump retaining bolts.
  4. Remove the vacuum pump assembly (2).

Installation Procedure

    Object Number: 790274 Size: SH
  1. Install the vacuum pump assembly (2).

    2. 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.

  2. Install the vacuum pump retaining bolts.

    3. Tighten
    Tighten the bolts to 3 N·m (27 lb in).

  3. Connect the vacuum pump electrical connector.
  4. Connect the vacuum hoses.