This works :
sudo $(which your_command)
Explanation onExample calling my gps script which lists Nvidia GPU's processes :
$ sudo gps
sudo: gps: command not found
$ sudo $(which gps)
PID TTY TIME CMD
9922 tty7 02:42:47 Xorg
Explanation :
$ set -x;sudo $(which gps);set +x
++ which gps
+ sudo /home/xyztuv/myScripts/shl/gps
PID TTY TIME CMD
9922 tty7 02:42:39 Xorg
+ set +x