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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN CARGO, 6.5 FREPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSMISSION SERVICINGREMOVAL & INSTALLATIONVALVE BODY & PRESSURE SWITCH (4L60-E)REMOVAL
2001 Chevrolet Chevy Express G3500, Van Cargo, 6.5 F

Valve Body & Pressure Switch (4L60-E): Removal

2001 Chevrolet Chevy Express G3500, Van Cargo, 6.5 FSECTION Removal
  1. Ensure that removal of the valve body is necessary before proceeding. The following components can be serviced without removing the valve body from the transmission. See Figure .
    • 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 following components. The transmission fluid pressure manual valve position switch (1). The 1-2 shift control solenoid (2). The 2-3 shift control solenoid (3). The pressure control solenoid (4). The TCC PWM solenoid (5). The 3-2 shift control solenoid (6). Bracket bolt (2).
  4. Remove the fluid indicator stop. See Figure . 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 Figure . 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 Figure . Remove the transmission fluid pressure switch. Inspect the transmission fluid pressure switch for damage or debris. See Figure .
    7. 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.
  7. Remove the manual detent spring retaining bolt. Remove the manual detent spring. See Figure . Inspect the manual detent spring for cracks or damage
  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 in AUTOMATIC TRANSMISSIONS.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.