GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Denali 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Exhaust Gas Recirculation Valve Cooler Cleaning and Inspection

    Object Number: 1662887 Size: SH
  1. Remove the exhaust gas recirculation (EGR) cooling hoses.
  2. Clean and inspect the EGR gasket surfaces.
  3. Clean and inspect the EGR and cooler.
  4. Replace the EGR or cooler if damaged.