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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 661 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Repair Instructions >> Accumulator Assembly, Spacer Plate, and Gaskets >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the transmission oil pan and filter. Refer to AUTOMATIC TRANSMISSION FLUID/FILTER REPLACEMENT .
    Fig 1: Accumulator Cover Retaining Bolts
    G01973026Courtesy of GENERAL MOTORS CORP.

    Important:  The 1-2 accumulator can be removed without removing the control valve assembly.

  3. Remove the control valve body. Refer to VALVE BODY AND PRESSURE SWITCH REPLACEMENT .
  4. Remove the accumulator cover retaining bolts.
  5. Remove the 1-2 accumulator cover assembly.
  6. Disassemble the 1-2 accumulator.
    1. 6.1. Blow compressed air into the 1-2 accumulator cover, as shown, to remove the 1-2 accumulator piston.
    2. 6.2. Remove the 1-2 accumulator inner and outer springs.
  7. Inspect the 1-2 accumulator inner and outer springs for cracks.
    Fig 2: Inspecting 1-2 Accumulator Inner & Outer Springs For Cracks
    G01973027Courtesy of GENERAL MOTORS CORP.
  8. Remove the 1-2 accumulator piston seal (1) from the 1-2 accumulator piston.
  9. Inspect the 1-2 accumulator piston for the following defects:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
    Fig 3: 1-2 Accumulator Piston Seal
    G01973028Courtesy of GENERAL MOTORS CORP.
  10. Inspect the 1-2 accumulator cover for the following defects:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
    Fig 4: Inspecting 1-2 Accumulator Cover
    G01973029Courtesy of GENERAL MOTORS CORP.
  11. Remove the spacer plate support retaining bolts.

    Important:  Use care not to drop the following items that will be removed along with the spacer plate:

    • The number 1 checkball
    • The 3-4 accumulator spring
    • The 3-4 accumulator pin
  12. Remove the spacer plate support.
    Fig 5: Spacer Plate Support Retaining Bolts
    G01973030Courtesy of GENERAL MOTORS CORP.
  13. Remove the spacer plate to valve body gasket, the spacer plate and the spacer plate to transmission case gasket.
    Fig 6: Removing Spacer Plate To Valve Body Gasket
    G01973031Courtesy of GENERAL MOTORS CORP.
  14. Remove the 3-4 accumulator piston (2).
  15. Inspect the 3-4 accumulator spring for cracks.
    Fig 7: 3-4 Accumulator Piston
    G01973032Courtesy of GENERAL MOTORS CORP.
  16. Remove the 3-4 accumulator piston seal (1) from the 3-4 accumulator piston.
  17. Inspect the 3-4 accumulator piston for the following defects:
    • Porosity
    • Cracks
    • Scoring
    • Nicks and scratches
    Fig 8: 3-4 Accumulator Piston Seal
    G01973033Courtesy of GENERAL MOTORS CORP.
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