GM’s first year for optional “rear” air conditioning! Thus, on the 1967-72 Suburban series, this is a one year only design.

Prior to 1972, the Suburban’s from GM and some aftermarket companies sold a long unit “down the center” of the interior above the two rear row of seats. (The original in dash unit also operated.) No doubt tall people could not comfortably sit in the center of the seat.

1972 Suburban Highlander