The enclave has a timing chain not a belt but spray some water on your belt for alternator, if the noise stops it's probably coming from there. Belt replacement along with tensionner is sguggested at 60,000 miles so you are due. Also there is a tsb on using a laser alignment tool as teh pulleys may be out of alignment which will cause noise as well.
SPONSORED LINKS
Sunday, February 10th, 2013 AT 11:27 PM