2-3 Shift Accumulation

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

2-3 Accumulator Piston

Orificed third clutch pressure actuates the 2-3 accumulator piston, which cushions the apply of the third clutch. The 2-3 accumulator fluid acts on the spring side of the piston, and the fluid is forced back through its circuit to checkball #10.

#10 Checkball (2-3 Accumulator, Secondary 2-3 Accumulator)

The #10 checkball is located in the case cover. This checkball is unseated by 2-3 accumulator fluid, allowing fluid to enter the secondary 2-3 accumulator circuit. Secondary 2-3 accumulator fluid is then routed to the 2-3 accumulator valve.

2-3 Accumulator Valve

Biased by spring force and torque signal on one end, the 2-3 accumulator valve regulates the exhaust of 2-3 accumulator fluid during a 2-3 shift.

Third Clutch Exhaust Valve

Orificed third clutch fluid pressure shifts the exhaust valve against spring force. The valve allows orificed third clutch fluid to enter the third clutch circuit, where the fluid applies the third clutch.