truncating last two characters from SQL MST 2014 : This will seem rudimentary but trying the substring command to no avail.

Using substring('indcode',1,4).

The values are 6 characters long and I need the last two deleted from them. In short,  I need them truncated from 6 to 4.

Also, in the table indcode is set as a char(6). Could that be why I get an incorrect syntax error when I use that subtring command?