I've got a 2002 Burb with front and rear AC.

The rear is normal ice cold but the front is just a little cool.

The temp adjust in front will go to hot if turned all the way hot when the AC is on, but won't do more than a little cool when turning AC to MAX setting.
And it just had a fresh charge
Any ideas greatly aprecitated.

 

Blend actuator in the front needs to be checked. Since it's cold in the rear the front actuator or its door is not fully closing off heat.