I am boggled. Usually I can pin point any problem going on with my truck, but this one I just can't figure out.
Neither can several mechanics I've talked to. (They've all given me completely different answers)
Google doesn't help much either. Anyone out there been a mechanic for years?

The problem is ONLY when I am at a stop, and release my brake pedal to switch to gas, there is a "DING" or "GONG" sound that occurs.
It doesn't happen when I have just started the truck, only once it's been running.

Also it only happens when I release the brake pedal from a complete stop. (as opposed to slowing down without a stopping)



Any suggestions would be great.
Thanks.