GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1581041  Size: SH
  1. Using a 30-32 mm (1 3/16 in) deep well socket or box end wrench, depress the 4 tabs on internal wiring harness connector (1). With the tabs depressed, gently pop the connector into and through the transmission case with the palm of the hand.

  2. Object Number: 1581043  Size: SH
  3. Disconnect the internal wiring harness (2) from the following components:
  4. • Pressure control solenoid 1 (PCS1) (7)
    • PCS2 (6)
    • Shift solenoid 3 (SS3) (5)
    • SS2 (4)
    • Torque converter clutch (TCC) PCS (3)
    • SS1 (8).
    • Transmission fluid pressure (TFP) switch (9)
    • Modulated main pressure solenoid (11)
    • Transmission internal mode switch (IMS)
  5. Remove the solenoid retainers (1) from SS2 (4) and SS3 (5).
  6. Remove the internal wiring harness (2) from main valve body (10).
  7. Install the solenoid retainers (1).