Now that the weather is cooling, and my windows are down, I am noticing an odd sound seemingly from the left rear of our Matrix. It is a fairly high (but indeterminately) pitched, sustained jingling or rattling. Somewhat like I am dragging a very light chain behind the car, or scraping a light metal rod along very finely corrugated, but thick (high pitched) metal. Or maybe like a really lousy triangle. It starts and stops unpredictably, but with changes: it may start or stop with the application of brakes or gas, or may do so randomly. I think. I have not been able to discern a consistent pattern.
We are about to take a short weekend road trip. Should I be very worried?