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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Automatic Transmission Servicing (4L60-E)) >> Removal & Installation >> Valve Body & Pressure Switch >> Removal

Valve Body & Pressure Switch: Removal

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  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 control solenoid (4).
    • 1-2 shift control solenoid (5).
    • Transmission fluid pressure manual valve position switch (6).
    • 3-2 shift control solenoid (7).
    • Torque converter clutch pulse width modulation solenoid (8).
  2. Remove the fluid level indicator. Raise and support the vehicle. Remove the oil pan, gasket and filter. See DRAINING & REFILLING  under LUBRICATION.
  3. Disconnect the internal wiring harness electrical connectors from the transmission fluid pressure manual valve position switch (1), 1-2 shift control solenoid (2), 2-3 shift control solenoid (3), pressure control solenoid (4), TCC PWM solenoid (5) and the 3-2 shift control solenoid (6).
  4. Remove the fluid indicator stop bracket bolt. See Fig 2 . Remove the fluid indicator bracket (1). 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.
  5. Remove the TCC PWM solenoid (1) to access the TCC solenoid retaining bolts. See Figure . Remove the TCC solenoid retaining bolts. See Fig 3 . Remove the TCC solenoid (with "O" ring seal) and wiring harness from the control valve body.
  6. Reposition the harness to the side of the transmission case. See Figure . Remove the control valve body bolts which retain the transmission fluid pressure switch to the control valve body. See Fig 4 . Remove the transmission fluid pressure switch. Inspect the transmission fluid pressure switch for damage or debris. See Fig 5 .
  7. Remove the manual detent spring retaining bolt. Remove the manual detent spring. See Fig 6 . 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.
  8. Remove the remaining control valve body bolts. Carefully begin to lower the control valve body down from the transmission case while simultaneously disconnecting the manual valve link. See Figure .
  9. If disassembly of the control valve body is necessary, see appropriate OVERHAUL article.
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.
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