I just recently purchased a 03 Tacoma from a Toyota dealership. The Tacoma is a "Toyota Certified Vehicle". I noticed recently that there is a high pitch noise during acceleration. Let up on the gas the noise stops; apply the gas, the noise starts again. The mechanic at the dealership didn't know what the problem was (he went for a test drive with me) and said it was not high enough to diagnose further. He did greased the drive shaft thinking that might address the problem but it didn't help. Not too sure what I should do at this point. The truck has a bumper-to-bumper coverage for the first 3mth or 3000miles. Anyone experience this type of problem? If so, what was the problem and how was it fixed.
Thanks for any help.
SLS