GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 6.6L (LB7) 🢒 Vacuum Pump Cleaning and Inspection

    Object Number: 881735 Size: SH
  1. Remove the vacuum pump hose.
  2. Clean and inspect the vacuum pump and pulley.
  3. Inspect the vacuum pump pulley for damage.
  4. Replace the vacuum pump or pulley if damaged.
  5. Install the vacuum pump hose.