Took the Van in under warranty and was told twice it could not be fixed. Now after warranty has expired I have taken it to my local mechanic who replaced all the pulley's (one had bad baring) and belt. I am mad because the Chevy dealership thought I would just let it go. I am sending a bill to them and a letter to the dealer saying they could not fix the problem while under warranty. I am also sending all the info to Chevy and the Highway Safety people. I would hope others with the same problem would post here.