1994 Cadillac Seville Owner's Manual - Page 333

4T80E Transaxle l l The Hydra-Matic 4T80E transaxle hasbeen designed to complement the output characteristics of the Northstar engine. The innovative design incorporates several features which enhance its overalloperation. This transaxle isthe first of a new generation of "SMART" transmissions. The computer which controls the electronic shift solenoidsadapts to changing environments while drive. This provides consistent high you quality shiftsunder all conditions. Communication between engine the and transaxle through this computer controls engine output during activation of torque management or traction control. Smooth shifting is ensured by design. Hydraulic accumulators control shift pressures and all shifts are made to free wheeling elements. dry The 4T80E uses a sump lubrication system with a scavenger pump. This unique feature er,ables the transaxle to maintain adequate pressurized oil supply during all maneuvers. 320