DEFINITION: Gear engagement that is harsh when the engine is idling in Park or Neutral, and the gear selector is moved to Drive or Reverse range.

Transmission Main Line Pressure

High transmission main line pressure

Reverse Band Servo Assembly - Reverse engagement only

The reverse band servo piston cushion spring (45) is broken or is missing.

Forward Band Servo Assembly - Drive engagement only

The forward band servo piston cushion spring (19) is broken or is missing.

Transmission Case Cover Ball Check Valve - Reverse engagement only

The #5 Ball check valve (372) is mislocated or is missing.

Transmission Case Cover Ball Check Valve - Drive engagement only

The #6 Ball check valve (372) is mislocated or is missing.

Control Valve Body Assembly - Reverse engagement only

The reverse servo boost valve (367A) is binding or is damaged.

Control Valve Body Assembly - Drive engagement only

The forward servo boost valve (367B) is binding or is damaged.

Control Valve Body Spacer Plate Assembly - Drive engagement only

The thermal element is damaged or is not functioning properly.