GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Mechanical - 6.5L 🢒 Oil Filter Adapter Removal

    Object Number: 181988 Size: SH
  1. Remove the oil filter fitting.

    2. Object Number: 66576 Size: SH
  2. Pry out the oil filter bypass valve using a screwdriver.
  3. Remove the oil cooler bypass valve using the following procedure:
    4. 3.1. Install a sheet metal screw into the hole in the cup plug.
    3.2. Using side cutters or pliers, pry out the cup plug.
    3.3. Pry out the oil cooler bypass valve using a screwdriver.