My 2003 A/C blows air sometimes cold air. Then sometimes hot air. Then it will go back to cold air. My warranty has expired. I am taking it to the dealership tomorrow - one technician says it could cost me $1,700 to replace the unit and another had mentioned that it could be a sensor that needs replacing or cleaning. This is a big difference in cost. Another tech had mentioned that the computer just may need to be reset.
