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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Automatic Transmission Servicing) >> Removal & Installation >> Control Valve Body (4L80-E) >> Removal

Control Valve Body (4L80-E): Removal

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the oil pan and filter. See DRAINING & REFILLING  under LUBRICATION.
    2. NOTE: The 5 O-rings should remain attached to the TFP valve position switch.
  2. Remove the Transmission Fluid Pressure (TFP) manual valve position switch bolts and the TFP valve position switch. See Figure . Remove the control valve assembly bolts and the fluid level indicator stop bracket.
  3. Remove the lube oil pipe retainer (7) and the clamp. Remove the lube oil pipe (5). Remove the manual shaft detent spring assembly (3). See Figure .
  4. Remove the control valve assembly (2) which includes the following:
    • The accumulator housing assembly.
    • The control valve assembly to the spacer plate gasket.
    • The spacer plate.
    • The accumulator gasket.
  5. Remove the manual valve (16) from the control valve body to prevent any damage. Inspect the manual valve for nicks and burrs. See Figure .
  6. Remove the spacer plate to case gasket from the case. The gasket may stick to the spacer plate. Remove the PWM screen from the case passages. Inspect the PWM screen for debris and damage.
    7. CAUTION: Do not use a magnet in order to remove the checkballs. Using a magnet to remove the checkballs may magnetize the checkballs, causing metal particles to stick.
  7. Remove the 8 checkballs (9 checkballs for some transmissions).
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