The ornamental design for an exteriorsurface of a combined vehicle sliding door interior grab handle and thumb button door latch release, as shown and described.
FIG. 1 is a front and left side perspective view of an exterior surface of
a combined vehicle sliding door interior grab handle and thumb button door
latch release showing our new design, the fragmentary broken-line
disclosure of a portion of the a vehicle sliding door being for
illustrative purposes only and forming no part of the claimed design, and
the top, bottom, and rear being plain and unornamented;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a left side elevational view thereof; and,