Grand Vitara 2005 1.6 - 3p squeals a strap.

Hello pleasure to greet them, they could help me with the following consultation; I have a Suzuki Grand Vitara 2005 1.6 3p. And sometimes in the mornings or when it is a long time cold and I turn it on, an alternating strap sounds, I do not know if it will be the alternator or the Air Air. The one that sounds, a very annoying noise, the straps are new, and they are braces, it is not a problem of being spent or loose, 3 months ago I changes them, and I gave them a second tightening, the noise is not constant disappears after a couple of minutes of walking,
a friend has a Suzuki Jemmy 2004 and the same thing happens to him ..
what can be ..?
Thanks in advance.
kind regards.

The straps you are using are alternative or original
I recommend that you look well if it fits into the snapped pulley are cold (in the morning after being detained all night) since if it does not fit well after the belt is heated it stretches and allows it to adapt to the pulley
I hope and help you
.

oka that will do ..
they are alternatives
thanks
greetings

Check the type of straps you are using (AOB)

A or b ... ??? I don't know v