AllenW2018

Yeah I feel pretty confident that it’s the same issue. If it eases your mind any, mine has been doing it for a year and hasn’t gotten any worse. I haven’t had time to put it in the shop for it because it takes for ever for our local dealership to do anything. If if you happen to get it looked at/ diagnosed/ or fixed, please keep me informed. I may have time in a week or 2 to put mine in the shop.

Just went to town and tried putting it in neutral. It responds the same way as letting off the gas. It immediately cuts the noise out and doesn’t pick back up until you put it in drive and get back to speed. Same goes for just letting off the gas. You can coast all the way down and it never makes a sound.

Forgot to mention this. I’ve had several people ride with me and listen to it. Everyone has said they think it’s coming from directly under them in the backseat. Sounds like that to me as well. It’s been doing this for almost a year and hasn’t gotten any better or worse.

I’m going to describe this to the best of my ablitly, and see if anyone else has experienced this, or has any thoughts on it. Ive been riding like this for months because I haven’t had a chance to put it in the shop. Truck: 2014 Sierra 1500 4x4 all terrain slt w/ 6.2. 4 inch lift. 33” tires. 20” wheels. The sound: sounds like something rubbing/ slightly grinding. It has to be something rotating. It can be a faint noise or something loud that really grabs your attention. When it occurs: When everything starts warming up nicely, generally somewhere around 2 miles into trip. it’s by far the worst once you get to the speed you desire and stay there ( with cruise or just using pedal ). happens on occasion when accelerating up to speed, but not near as often. It never does it when slowing down. Duration: there is no pattern to it whatsoever. It could make the noise for .2 seconds. Stop for 12 seconds. Grind for 4 whole seconds. Stop for .5 seconds. You get the picture. Its continuous, in a sense that if you have a 100 mile trip, it’s going to continuously start and stop the whole way. Other things to note: i have noticed that as soon as I hear the sound start, I can let off of the gas, or give it a little more and it immediately cuts the noise out. As soon as I hold the pedal and maintain speed, it starts back up. The other her thing I’ve noticed is that the rpm needle is steadily moving at all times. Example, running 70 on perfect flat smooth road, cruise on, the rpm needle is Jumping back and forth about 100 rpms. I have tried to be detailed and thorough, so let me know what you guys think if it sounds familiar.