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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 236 (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 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and support the vehicle.
  2. Remove the transmission oil pan and filter. Refer to Automatic Transmission Fluid/Filter Replacement .

    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.
    Fig 1: Removing Accumulator Cover Retaining Bolts
    G02424222Courtesy of GENERAL MOTORS CORP.
  6. Disassemble the 1-2 accumulator.
    1. Blow compressed air into the 1-2 accumulator cover, as shown, to remove the 1-2 accumulator piston.
    2. Remove the 1-2 accumulator inner and outer springs.
  7. Inspect the 1-2 accumulator inner and outer springs for cracks.
    Fig 2: Disassembling 1-2 Accumulator
    G02424223Courtesy 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: Removing 1-2 Accumulator Piston Seal
    G02424224Courtesy 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
    G02424225Courtesy 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 check ball
    • The 3-4 accumulator spring
    • The 3-4 accumulator pin

  12. Remove the spacer plate support.
    Fig 5: Removing Spacer Plate Support Retaining Bolts & Support
    G02424226Courtesy 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 Gaskets & Spacer Plate
    G02424227Courtesy of GENERAL MOTORS CORP.
  14. Remove the 3-4 accumulator piston (2).
  15. Inspect the 3-4 accumulator spring for cracks.
    Fig 7: Removing 3-4 Accumulator Piston
    G02424228Courtesy 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: Removing 3-4 Accumulator Piston Seal
    G02424229Courtesy of GENERAL MOTORS CORP.
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