The year 1956 saw a further development of the transmission in a major redesign of a majority of all individual transmission components, including re-calibration of the shift pattern producing an improvement of shift control. In addition there was a nomenclature change which reverted to the plain name of Ultramatic Drive. This year also saw the selector quadrant undergo yet another change to become: PNHDLR in order to further clarify the two drive ranges and accommodate the soon to be released push button control pod. In addition General Motors threatened lawsuits regarding dual "Drive" ranges, because of their "Dual-Range Hydra-Matic Drive" of 1953, and beyond that used this dual drive range selector pattern.