I have a 2006 Suzuki XL7. I’m looking for on advice on what could be possibly wrong with it. The major issue is that it has a chirping noise. It also has voltage under 13 volts when it is under load but over 14 idol. The chirping noise is louder and happens faster when driving it. I have sprayed water on the belt, that did not change the squeaking. I also have replaced the battery and alternator. It still has low voltage and the same chirping. I appreciate any help anyone can give me!