usually system is low of freon when this concern occurs. if 134 freon is ok then temp doors may be out of calibration. djones1
Dissconnect the battery for 1 hour and reconnect, should re-set the flaps!
sounds like you need an A/C programmer
Temp blend door actuator malfunction.
When my a/c system is low on refrigerant, it blows hot on drivers side, cold on passenger side of the dashboard. This is a 1997 Buick Ultra. Recharging the system solves the problem.
I have the same problem with my 95 olds 98 regency, did you find anything out?
heater control valve is bad on the drivers side.
Check the following items............... 1. A/C heater controller. 2. A/C heater controller doors.
Question. Does the compressor engage ? If yes, then it's the blend door. And that is another job. It's way inside the dash, passenger side.
Concussion.
Your average A/C unit blows heat through all vents.
i just got i back from getting a wiper switch installed and this started happening the day i got it back. so could they have messed with something or what help please cheese problem go to a macanic it well help alot
buy a fuse!