Part-throttle driveability can often be improved by changing to a vacuum modulator designed for higher shift points (General Motors and FoMoCo products only). Modulators displaying a red band are used ...

General Motors’ Hydramatic Division can take credit for having designed and produced the most rugged and dependable domestic automatic transmissions ever done. In fact, the Hydramatics are so darned ...

General Motors' Hydramatic Division can take credit for having designed and produced the most rugged and dependable domestic automatic transmissions ever done. In fact, the Hydramatics are so darned ...