Inaccurate Shift Points. Buick Roadmaster 1996

For 1990-2009 cars

#### Inaccurate Shift Points

Checks | Causes
--- | ---

Oil Pump Assembly

• | Stuck pressure regulator valve.

• | Sticking pump slide.

Valve Body Assembly | Spacer plate or gaskets misassembled, damaged or incorrect

Case

• | Porous or damaged valve body pad.

• | 2-4 Servo Assembly.

- | 2-4 accumulator porosity

- | Damaged servo piston seals.

- | Apply pin damaged or improper length.

• | 2-4 Band Assembly.

- | Burned

- | Anchor pin not engaged.

Throttle Position Sensor

• | Disconnected

• | Damage

Vehicle Speed Sensor

• | Disconnected

• | Damaged

• | Bolt not tightened

4WD Low Switch

• | Disconnected

• | Damaged.