Auxiliary Fluid Accumulator Removal

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Auxiliary Fluid Accumulator Components

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING: The automatic transmission fluid accumulator may be pressurized greater than 120 psi (827 kpa) and fluid may be hot. When servicing accumulator, key must be OFF for a minimum of 10 minutes. Do not open bleeder screw until instructed to do so or personal injury may result.
1	Automatic Transmission Auxiliary Fluid Accumulator Bolt [3x]
2	Automatic Transmission Auxiliary Fluid Accumulator Procedure Secure the auxiliary fluid accumulator to a vise. Securely attach a hose from the bleeder screw into an approved container. Slowly loosen bleeder screw until pressure begins to release. Allow all pressure and fluid to be released from the auxiliary fluid accumulator. Tighten bleeder screw to 13.5 N.m (119 lb in).
3	Automatic Transmission Case Seal [2x] Procedure Remove and DISCARD the O-ring seal.
4	Accumulator Bypass Valve Seal Procedure Remove and DISCARD the seal.
5	Accumulator Valve Body Bolt [2x]
6	Shift On/Off Solenoid Valve NOTE: Repair or replace as necessary The Automatic Transmission Auxiliary Fluid Accumulator Solenoid Cover can be removed when servicing the Accumulator Bypass Valve Seal.
7	Accumulator Bypass Valve Seal Procedure Remove and DISCARD the seal.