kitesurfer

13k miles now on my 16 vert and it's got the shakes. with my top down and radio up (in florida) for most of the 13k miles, I never really noticed it. I had heard the warbal a few times so faint that my wife could not pick it out. Thanksgiving in NC, driving country roads at 40mph with the top up and radio off, it was a very distinctive noise that I found similar to a turkey gobble. I also noticed a rumble strip feel that I had not noticed before and thought it was rough roads. several miles on a brand new road surface nailed the coffin. but, it also does it in 8 cylinder too. 5 hours driving back beat me to death!

MikeyTX

Bet you have a distorted wheel (s) For whatever reason, the barrels can be knocked out of round. I've had several that needed to be replaced on 2 of my C7's, simply from normal driving. Discovered it when I took the cars in for rotation and balance. I cross rotate every 5k as per the OM.

Red C8 of Jax

Looks like you have joined the bad torque converter club. Been there done that also. I have never had the warble noise but sounds like you might have joined that club also. WOW, glad you are still under warranty. Get your dealer to check out and correct your problems. You will love your car again.

davidtcpa

You may want to read this....

https://www.corvetteforum.com/forums...asionally.html

jimmie jam

This is what I just posted in the thread that David referenced...I'm not happy...

Well, my car was put into service 9/25/16. The last time I drove it was the middle of March, 2017 with 982 miles. Brought it off the lift on Friday and put about 12 miles in town on it, noticed nothing at all. Saturday I take it out and about 2 miles from home @ about 35 mph on a smooth road the car starts to "shutter", BAD. I thought that maybe it was the tires - not. Maybe the exhaust - not. Took it out yesterday but did not notice it (was in M mode most of the time). Car now has 1055 miles and I'm afraid that I've got the bug....

Rebel Yell

I hate to hear that news KS. Do read the thread David posted ref: the warble. Mines had that since day one like Jimmie's. It has been found that the ring gear/pinion is the cause, and you have to make sure that the replacement diff is the new design. GM knows of the "warble", but in their infinite cause of saving money they have not issued a TSB or even notified the dealers that this anomaly exits. Good luck sir.

jimmie jam

If it is the ring/pinion gears then why not shutter all the time? GM does not seem to have totally nailed the issue...TC, diff, AMF...what the what??? Sicking on a new 80K vehicle.

Rebel Yell

Jimmie, the ring gear/pinion has nothing to do with the shutter. It's what causes the strange "warble" noise at around 1500 rpm's under a slight load. The shutter is all TCS related.

Skid Row Joe

Should be referred to as 'shuddering,' not 'shuttering.'

MikeyTX

kitesurfer

seriously? do you own spell check or something?

MikeyTX

I understood what you meant.

NSC5

If it is the torque converter lockup clutch it should disappear in manual mode once sufficient cruising speed is reached where the clutch is commanded to be locked OR under conditions where the lockup clutch isn't commanded on (very low speed operation). If it shudders under all conditions then you likely have a wheel out of round, power delivery issue (engine), or other cause. In manual mode with a severely compromised converter clutch you may get a very brief shudder event at the point where the converter clutch is commanded to engage since it uses a "soft engagement" strategy in most situations to avoid drivetrain jerk and during this soft engagement it won't be working as intended but once fully engaged in manual mode the shudder should disappear. IF it continues in manual mode due to converter clutch wear then you are well past the point where "magic" fluid is going to help but since your issue just appeared I seriously doubt it is the converter clutch since you also noticed it in manual mode.

The severe shudder that occurs with a failing torque converter clutch appears in V4 mode because the torque converter lockup is being commanded on/off at a high rate to reduce transmission of engine vibration to the rest of the drivetrain and when the clutch is sufficiently worn it is no longer providing the expected/programmed engagement so you end up with repetitive slip followed by hard lockup which creates the shuddering sensation as both engine power development and delivery are impacted by this unexpected transmission behavior. The new fluid will generally cure this at least temporarily IF the clutch material is in fairly good shape.

Resonator

It's not a simple spelling error, it's using the wrong word.
shut·ter·ing:
1. To furnish or close with shutters: locking the doors and shuttering the windows.
2. To cause to cease operations; close down: shuttering the store for the holiday.

We all get confused sometimes, and I'm not offended by someone simply pointing it out if I am. It's called live & learn. YMMV
Best of luck with your car's issues.

eboggs_jkvl

Well, the word is shudder. I understood what you were trying to say and what you were referring to. Don't get your jimmies in a bunch. If your auto-correct got you (I'm no virgin there either) then say you were helped into the word shutter. If you still wish to use the word shutter, then please change and use shudder.

Bottom line? Your TC is going **** up and you need to see the dealer.

Elmer

davidtcpa

Amazing how these threads get side-tracked quickly.

OP - based on what I have read about it, you should go back to the dealer and get the TC changed out (under warranty - I assume).

kitesurfer

I've made my apt for jan 11 to fix the shutter,,,i hope I didn't stutter.... when I told them it did shudder.

MikeyTX

Hope all works out for you.