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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Automatic Transaxle - 4T80-E - Introduction (2 Of 2)) >> Repair Instructions >> Repair Instructions - Off Vehicle >> Lower Control Valve Body Assembly Disassemble

Lower Control Valve Body Assembly Disassemble

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Internal Mode Switch
    GM1580428Courtesy of GENERAL MOTORS CORP.
  1. Use a small screwdriver in order to disconnect the electrical connectors from the following parts:
    • 1-2 shift solenoid valve (909)
    • 2-3 shift solenoid valve (910)
    • Internal mode switch (IMS) (942)
    2. Fig 2: Accumulator Housing
    GM1580429Courtesy of GENERAL MOTORS CORP.
  2. Remove the 3, 10 mm bolts (534) from the channel plate side.
  3. Remove the 6, 10 mm bolts (534, 951, 952, 954) from the accumulator housing.
    4. IMPORTANT: There are 4 checkballs (65) and a spring (971) under the accumulator housing (944).
  4. Remove the accumulator housing (944) from the channel plate.
    5. Fig 3: Channel Plate
    GM1580432Courtesy of GENERAL MOTORS CORP.
  5. Remove the 4 checkballs (65) and the spring (971) from the channel plate.
    6. Fig 4: Link Assembly & Internal Mode Switch
    GM1580433Courtesy of GENERAL MOTORS CORP.
  6. In order to disconnect the manual valve and link assembly (916) from the internal mode switch (IMS) (942), rotate the manual valve and link assembly (916) toward the IMS (942).
    7. Fig 5: Internal Mode Switch (IMS)
    GM1580437Courtesy of GENERAL MOTORS CORP.
  7. Turn the manual valve link 90 degrees and rotate the manual valve and link assembly (916) away from the IMS (942).
    8. Fig 6: Internal Mode Switch (IMS) Bolt
    GM1580439Courtesy of GENERAL MOTORS CORP.
  8. Remove the 3, 8 mm bolts (939) from the internal mode switch (IMS) (942).
  9. Remove the IMS (942).
    10. Fig 7: Identifying Lower Control Valve Assembly Retaining Bolts
    GM1217566Courtesy of GENERAL MOTORS CORP.
  10. Remove the 15, 10 mm bolts (938, 940, 941) from the lower control valve body.
  11. Remove the solenoid valve fluid filter retainer (981).
  12. Remove the lower control valve assembly (903) from the channel plate.
    13. Fig 8: View Of Channel Plate & Spacer Plate
    GM509660Courtesy of GENERAL MOTORS CORP.
  13. Remove the 4 checkballs (65).
  14. Remove the spacer plate and gasket assembly (935) from the channel plate (900).
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