I had the dealership change my drive belts, and ever since in cold mornings when I start my car the squeal loud enough to be heard from a block away.

I'm taking it back to the dealership, on Wednsday, any one have know what could have gone worng?

I have belt spray, but I don't want to use it, I just want to take it back since I paid good mullah for them to install them.

 

loose belts I think... your mechanic should just tighten them if thats the case...

 

The spray won't help you. Sounds like loose belts. Get into your engine bay and feel the deflection. They will probably have a lot of slack. That's a quick way to tell if they are loose. You could also measure the actual deflection at the midpoint of the longest span between pulleys and it should be no more than 1/2" with 22lbs. of pressure applied to the belt.