GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Yukon - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Engine Block Valley Cover Removal

    Object Number: 309859 Size: SH
  1. Remove the knock sensor wire harness.

    2. Object Number: 309864 Size: SH
  2. Remove the knock sensors.

    3. Object Number: 65048 Size: SH
  3. Remove the valley cover bolts.
  4. Remove the valley cover and gasket.
  5. Discard the valley cover gasket.

    6. Object Number: 490851 Size: SH
  6. Remove the knock sensor oil seals (1) from the cover (2).