New member, thanks for the add.
I tried searching the forums for noises during acceleration, but the other topic didn't quite match my issue.
(Specs: 5.3L stock. 112k miles. No after market parts that I'm aware of.)
I have a 2014 High Country 5.3L. I love this truck, her name is Pearline. She is leaps and bounds nicer than the 07 LTZ I had. But, like all relationships, over time, they start to dwindle. (Heated seats don't work, fuses are fine. I'll search the forum for that next).
Issue is though:
If I'm cruising on a flat road or a decline, and I punch the accelerator, I don't hear it. But, if I'm on a slight incline and crusing, if it down shifts without me increasing throttle, I don't hear it....
But, while in gear, if I give it more gas, while on incline, I hear a good awful noise. Only doesn't it at about 35-45mph. It only last a few seconds, then goes away, even if still accelerating. Doesn't do it at higher speeds. Just down shifts and goes. Only when it's around 35-45mph and a get in it aggressively.
I'd say it sounds like a vacuum line, but that doesn't quite explain it. Sounds like sliding a big metal cabinet across a concrete floor. But again, only last a few seconds, doesn't do it every time, but it does happen. Didn't do it when I bought it. So I'm sure something has worked it's way loose or worn out.
Thanks for any input you guys have.
Mike