I hear you on the weather. It almost makes me anticipate fall colors. In regards to your Regal, I would suggest having the dealership look at your Regal. I can look further into this and get an appointment made for you if you would like. Please reply via private message and include your VIN#, name, concern, and preferred dealer. I hope this gets taken care of quickly for you. Please keep us updated if you any further concerns.We have had extreme hot weather and those days that were in the 100's, a screeching belt noise is heard when the car is accelerating. I noticed this only happens when the A/C is on. Would this be the serpentine belt? ..and why is this happening, car is 2011 Regal!
Buick Customer Service