HooosierDaddy

Sorry, didn't see it was a manual. No Range Device Needed!

devnull

Dude that's awesome.... WOW!

JerryU

That noise is NOT a lifter IMO sounds like an exhaust leak or pipe hitting something. Early on (2013/2014) there were a few posts about the insulation in the valley cover out of place and making a loud injector pump noise BUT I have not heard anything like a that in my 2014 or Grand Sport LT1.

Finding a good C7 Tech is not easy. There is a small dealer in Hartsville SC where I picked up my Grand Sport bought with Courtesy Delivery who has a great C7 Tech but not sure I would not try to find a larger dealer. Got my 2014 from Hendrick in Cary NC. They sell a lot of Vettes. Don't know much about Hendrick in Charlotte.

devnull

Certainly possible. It is a bit quieter, but typical exhaust leak would follow a deeper sound on that side (usually). Hope your right Jerry, would be easier outcome

Maxie2U

Whatever is causing that noise is not normal and needs to be diagnosed sooner than later. If it was mine I would not drive it 7nless head8ng to the dealer.

Opossum

I also had an annoying tick, went in last week for 500 mile break in oil change and found a 3 inch gash in serpentine belt was the cause, replaced under warranty and ticking noise gone

JerryU

Yep, many noises are hard to diagnose! I had one that I finally figured out after a year! On a full lock, slow speed, right turn had a noise that sounded like a playing card in a bicycle wheel but it only occurred once per revolution. Had nothing to do with tire “chatter” as happened when warm and no such noise on a left turn. Thought it was the Grand Sport brake cooling duct or plastic air diverter hitting something.

Jacking the wheel and turning was no help even when lifting only a ¼ inch off the pavement, no noise. Tried the GM suggested, “remove the wheel and clean the matting surface” and retorque the lug nuts several times. Even trimmed some plastic I thought was offending. No help but the noise became less.

When I changed oil at ~1 year I saw the problem, which by then was almost gone. A wheel weight was on the inner edge and had been warn slightly on the front and top edge. Obviously, it was hitting the plastic brake cooling duct air diverter! A spot on the diverter and the top edge of the wheel weight were wearing! It’s gone now!

DopplerGS19

From inside the car I would bet money it was an exhaust leak from the passenger header collector or midpipe but standing over the motor with the hood up it's obvious it's on top of the motor. I would have opened it up myself yesterday if it weren't under warranty. I'll keep you guys posted could be a simple fix I definitely could be wrong. I'd be thrilled if I were haha.

JerryU

Try using a piece of hose as a stethoscope and check around the bottom of the manifold. In 2013/2014 that is where, as I recall, the sound insulation under the manifold to muffel the ~3000 pst mechanical pump noise was found out of place. Also check the stainless cover on the exhaust manifold.

On other hand, sound does travel.

Big Lebowski

No not normal. I’m not trying to turn this around on you (sincerely) but how did you not hear that before ou bought it. I always doa thorough walk around, and check the engine while running. Did it present after delivery?

DopplerGS19

I'll pick up a stethoscope and hunt around if the dealer can't sort it.

DopplerGS19

I bought it remotely from a forum trusted dealer. I did not hear it run until it was being backed off the enclosed carrier and I noticed it immediately. At that point it's mine like it or not. I sincerely thought it was an exhaust leak I only realized later something more serious could be going on. Even if I had I can't tell the truck driver to take it back, I owned it. So what's done is done.

Big Lebowski

I get it. Sorry to hear that. It takes some of the luster of the new car delivery, but take to your local dealer and they should get it sorted out. You'll have it back in hand before the Spring flowers start popping.

JerryU

Any dealer is “required” to fix it on warranty but put that in quotes as they don’t get much from GM for diagnosing the problem! So I agree if you can find the location and can point it out then they get paid for the effort to fix

Keep is posted

DopplerGS19

For sure. Truth is no one even knows the problem but there are likely suspects ranging from minor to major. On top of that no one including the selling dealer, the local guys or gm corporate is even aware or had the chance to address whatever it happens to be. I'll take it one step at a time.

kennyjames21

Thats why I would never buy a car remotely like that.

The dealer who sent you this car must have heard that ticking when they shipped it to you. Hold them accountable - and if they don't make it right, let us know what dealer sent you the car with an obvious engine tick. Hopefully it's something minor but that sounds bad to me.

Kevin A Jones

Sorry to hear of your issue, let's hope resolution is minor as opposed to major. My experiences over the years have taught me it's best to never buy a car sight-unseen or in this case unheard. Surprised the selling dealer didn't hear this defect, if in fact they didn't.

LarryFL

Sorry to hear bout this issue. Any LT1 owner will tell you that is not normal. I have an M7 with 19K miles, and mine doesn't idle like that.

Just thinking out loud... I assume you are still on first tank of gas tank. But even if the dealer put low octane complimentary fill up in there, knocking would affect all cylinders equally, and the sound is definitely near the rear two passenger side cylinders. Anyway, the knock sensor would have triggered a timing change, so that can't be it.

Good luck, we'll all curious what you find out.

OntarioOrangeC3

It is hard to understand how the selling dealer missed that.
Good luck OP. Hope it turns out to be minor & you get to enjoy that new ride soon.

17C7

Jesus Christ!