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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 275 (Automatic Transmission - 4L60-E/4L65-E - Servicing) >> Removal & Installation >> Valve Body & Pressure Switch >> Removal

Valve Body & Pressure Switch: Removal

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  1. Ensure removal of the valve body is necessary before proceeding. The following components can be serviced without removing the valve body from the transmission. See Fig 1 .
    • Torque Converter Clutch Solenoid (1).
    • Pressure Control Solenoid (2).
    • Internal Wiring Harness (3).
    • 2-3 Shift Solenoid (4).
    • 1-2 Shift Solenoid (5).
    • Transmission Fluid Pressure Manual Valve Position Switch (6).
    • 3-2 Shift Solenoid (7).
    • Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid (8).
  2. Remove the fluid level indicator.
  3. Remove the filter. See DRAINING & REFILLING  under LUBRICATION.
  4. Disconnect the internal wiring harness electrical connectors from the following components:
    • Transmission fluid pressure manual valve position switch. See Figure .
    • 1-2 shift control solenoid.
    • 2-3 shift control solenoid.
    • Pressure control solenoid.
    • TCC PWM solenoid.
    • 3-2 shift control solenoid.
    • Bracket bolt.
  5. Remove the fluid indicator stop bracket bolt. See Fig 2 .
  6. Remove the fluid indicator bracket (1).
  7. Remove the TCC PWM solenoid retainer (2) with a small screwdriver. Rotate the solenoid (1) in the bore, if necessary, until the flat part of the retainer (2) is visible.
  8. Remove the TCC PWM solenoid (1) to access the TCC solenoid retaining bolts. See Figure .
  9. Remove the TCC solenoid bolts. See Fig 3 .
  10. Remove the TCC solenoid (with "O" ring seal) and wiring harness from the control valve body.
  11. Reposition the harness to the side of the transmission case. See Figure .
  12. Remove the control valve body bolts which retain the transmission fluid pressure switch to the control valve body. See Fig 4 .
  13. Remove the transmission fluid pressure switch.
  14. Inspect the transmission fluid pressure switch for damage or debris. See Fig 5 .
  15. Remove the manual detent spring retaining bolt.
  16. Remove the manual detent spring. See Fig 6 .
  17. Inspect the manual detent spring for cracks or damage.
    CAUTION: Keep the control valve body level when lowering it from the vehicle. This will prevent the loss of checkballs located in the control valve body passages.
  18. Remove the remaining valve body bolts.
  19. Carefully begin to lower the control valve body down from the transmission case while simultaneously disconnecting the manual valve link. See Fig 7 .
Fig 1: Identifying Serviceable Components
G00056986Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing & Installing Fluid Indicator Stop Bracket
G00056987Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing & Installing TCC Retainer Bolts
G00056989Courtesy of GENERAL MOTORS CORP.
Fig 4: Removing & Installing Fluid Pressure Switch Bolts
G00056991Courtesy of GENERAL MOTORS CORP.
Fig 5: Inspecting Fluid Pressure Switch For Damage
G00089856Courtesy of GENERAL MOTORS CORP.
Fig 6: Removing & Installing Manual Detent Lever
G00089857Courtesy of GENERAL MOTORS CORP.
Fig 7: Lowering & Raising Valve Body
G00056992Courtesy of GENERAL MOTORS CORP.
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