2000 Chevrolet Silverado 1500 air conditioner

chevrolet
silverado1500

#1

ac only works at idle. blows but hot air. have replaced evap core, orfice tube, and dryer(including sensor on it). no leaks in freon and charged to them right amount


#2

Maybe failed blend door actuator. Failed at “heat” instead of AC. That is a wild guess based on the little you’ve told us in the post.