My 07 Sierra with dual climate control is hot on drivers side and cold on passenger side. Tried the recalibration procedure and didn't work. Is this a blend door actuator or temp control actuator problem? Where is this located

You can check the blend doors, by disabling the A/C and commanding full hot and full cold...if they are the same it'* not the blend doors, and is more likely low on refrigerant.....

Is this with the A/C on? A shop with a Tech II scan tool can re-calibrate & then better diagnose the potential faults.
Located well behind the dash,all passenger side, it'* a lot of work to take stuff apart to access, if actuators are in need of replacement.

yes with the a/c on. Recalibration was done,and worked properly for about a day. Just not sure of correct actuator and location