GM Service Manual Online
For 1990-2009 cars only

Disassembly Procedure


    Object Number: 318581  Size: SH
  1. Remove the O-ring union fitting (5) from the housing (1).
  2. Discard the O-ring seal (4) from the fitting (5).
  3. Remove the control valve assembly (3) from the housing (1).
  4. Remove the flow control spring (2) from the housing (1).