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Home >> Chevrolet >> 2002 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1580 (Automatic Transmission - 4T45-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> On-Vehicle Repair Instructions >> Control Valve Body Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Removing & Installing Oil Pump Assembly & Oil Pump Shaft
    GM893972Courtesy of GENERAL MOTORS CORP.
  1. Remove the transaxle case side cover. Refer to Control Valve Body Cover Replacement .
  2. Remove the oil pump bolts and the oil pump assembly.
  3. Remove the oil pump shaft.
  4. Fig 2: Identifying Wire Harness Connectors From Pressure Control Solenoid, 1-2 Shift Solenoid, 2-3 Shift Solenoid, TFP Switch Assembly & TCC Solenoid
    GM893962Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the wire harness connectors from the following components:
    • Pressure control solenoid
    • 1-2, 2-3 shift solenoids
    • TFP switch assembly
    • TCC solenoid
  6. Fig 3: Removing & Installing Transmission Fluid Pressure Manual Valve Position Switch & Identifying O-Rings
    GM893953Courtesy of GENERAL MOTORS CORP.
  7. Remove the TFP switch assembly bolts and remove the switch assembly from the control valve body. The 7 TFP switch O-rings are reusable if not damaged and should remain with the pressure switch assembly.
  8. Fig 4: Removing & Installing Control Valve Body Assembly
    GM1776844Courtesy of GENERAL MOTORS CORP.
  9. Remove the remaining control valve body bolts (9, 12, 16) and remove the control valve body assembly (18).
  10. Fig 5: Removing & Installing Spacer Plate Support & Spacer Plate
    GM1844265Courtesy of GENERAL MOTORS CORP.
  11. Remove the spacer plate support bolts (20) and remove the spacer plate support (21).
  12. NOTE: Checkballs may fall out of the channel plate assembly. Retain the checkballs with petroleum jelly.
  13. Remove the spacer plate (90) with the spacer plate filter attached.
  14. Remove and discard the spacer plate assembly (90).