I'm having a ac problem we have replaced the blower fan resistor the fuses are good the blower fan motor is good.. the compressor works and the back seat ac works but the front ac won't come on

If you have an Electronic Air Temperature Control (EATC) system, run the diagnostics. It may have thrown a code, for example 024, indicating an A/C Electronic Blend Door Actuator Failure. In this case, you would need to clear the code, remove the blend door actuator, plug the new actuator into the connector, turn the ignition key on and off to calibrate the new actuator, and then finish installing the actuator. I always clean the blend door assembly well and lubricate it with WD-40. Basically, I think you have a blend door problem.