GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 1999 🢒 Unit Repair 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4 Speed-MS7 🢒 Lower Valve Body Assemble

    Object Number: 431990 Size: LH
  1. Install the following components into the lower valve body (23), securing with one key (4):
    2. • The primary regulator valve (1)
    • The primary regulator valve spring seat
    • The primary regulator valve spring (2)
    • The primary regulator valve No. 1 plunger (6)
    • The primary regulator valve No. 2 plunger (3)
    • The primary regulator valve sleeve (1)
  2. Install the following components into the lower valve body, securing with one key (8):
    3. • The cut-back valve spring (10)
    • The cut-back valve (9)
    • The cut-back valve plug (7)
  3. Install the following components into the lower valve body, securing with one key (12):
    4. • 2-3 shift valve spring (14)
    • 2-3 shift valve (13)
    • 2-3 shift valve plug (11)
  4. Install the following components into the lower valve body, securing with one key (16):
    5. • 1-2 shift valve spring (18)
    • 1-2 shift valve (17)
    • 1-2 shift valve plug (15)
  5. Install the following components into the lower valve body, securing with one key (20):
    6. • The reverse control valve (22)
    • The reverse control valve spring (21)
    • The reverse control valve plug (19)

    Object Number: 431992 Size: LH
  6. Install the following components into the lower valve body (1), securing with one key (2):
    7. • The accumulator control valve (5)
    • The accumulator control valve spring (4)
    • The accumulator control valve plug (3)
  7. Install the following components into the lower valve body, securing with one key (6):
    8. • The low coast modulator valve (9)
    • The low coast modulator valve spring (8)
    • The low coast modulator valve plug (7)
  8. Install the following components into the lower valve body, securing with one key (10):
    9. • The second coast modulator valve (13)
    • The second coast modulator valve spring (12)
    • The second coast modulator valve plug (11)
  9. Install the following components into the lower valve body:
    10. • The pressure relief valve check ball (16)
    • The pressure relief valve spring (15)
    • The pressure relief valve retainer (14)
    • The pressure relief valve screw
  10. Install the following components into the lower valve body:
    11. • The cooler by-pass valve spring (17)
    • The cooler by-pass valve (18)