If you are using the EG GUI, you specify the major tick marks when you create a graph. To specify that the scale is 1-3 will put the following ORDER command into your code.
Axis1 ORDER=(1 2 3) ;
or
Axis1 ORDER=(1 to 3 by 1);
If you are running multiple plots through code, just make them all reference the same axis which in the code for a vertical bar graph below is referenced by RAXIS.
PROC GCHART DATA=WORK.Sorted;
VBAR3D PFL_TYP_CD /
SHAPE=BLOCK FRAME TYPE=FREQ
COUTLINE=BLACK
RAXIS=AXIS1
MAXIS=AXIS2;
RUN; QUIT;