It's been a few months and no chirps. This belt fits my 2005 Chrysler Town and Country perfectly. I started tweeting last winter. I bought a new $30 belt at an auto parts store and it stopped chirping for about 3 days and then came back. Before installing the new belt, I replaced the harmonic balancer, belt tensioner, and idler pulley. Still tweeted. I used a piece of 1/4" air hose, held it to my ear, and routed the other end in various places. It came from the alternator pulley. The alternator is only a few years old. The pulley was in great shape, so I did checked the alignment of the pulley all they align pretty well but there must be something off track enough to give me a tweet I saw the great reviews on this gaterback and ordered it no twitter in the last 3 months.