GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Torque Converter Clutch Valve and Spring Replacement

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the transmission oil pan and the oil filter. Refer to Automatic Transmission Fluid and Filter Replacement .
  3. Remove the valve bore plug retainer ring.

    4. Object Number: 43320 Size: SH
  4. Remove the following parts:
    5. 4.1. The valve bore plug.
    4.2. The TCC valve.
    4.3. The TCC valve spring.

Installation Procedure

    Object Number: 43320 Size: SH
  1. Install the following parts:
    2. 1.1. The TCC valve spring.
    1.2. The TCC valve.
    1.3. The valve bore plug.
  2. Install the valve bore plug retainer ring.
  3. Install the transmission oil pan and oil filter. Refer to Automatic Transmission Fluid and Filter Replacement .
  4. Lower the vehicle.