GM Service Manual Online
For 1990-2009 cars only

Caution: 

   • Transmission damage may occur when control valve assembly springs and other parts are mistakenly interchanged. Interchanging parts can be avoided by observing the following precautions:
      - Tag each part immediately when removed.
      - Use J 33163 Valve Tray Set to organize parts and to simplify correct valve body reassembly.
   • Protect control valve assembly parts from damage by observing the following precautions:
      - Handle all valves carefully.
      - Protect control valve assembly parts during removal, cleaning, inspection, and assembly.
      - Keep the parts in a clean container until the parts are installed.
   • When a valve is installed dry, the weight of the valve is sufficient to move the valve through the valve bore. If a valve does not move freely, the transmission may be damaged .