** C7 Reported issues and resolutions thread **
Pro
Joined: Mar 2012
Posts: 639
Likes: 28
From: South Eastern MI Michigan
AFM is the culprit.
Melting Slicks
Joined: Dec 2009
Posts: 3,213
Likes: 17
I have a 2014 and have noticed the same thing. It is now my belief that it is not the exhaust that is closing, but the AFM is going to 4 cylinder mode. Watch your V8 - V4 on your instrument cluster. My guess is that will be the issue. Sounds like a door is closing and then the exhaust is quite.
AFM is the culprit.
AFM is the culprit.
something else i've noticed when driving with the window down the a6 will go through what seems to be down shiftting and then i hear what i first thought was metal twisting or a small cherp sound from under the car .now i don't know if its the 4c. values closing or what it is but it dosen't sound normal( well gm would prob. say it was ) . it's not real loud but loud enough for me to hear with the window down.
some will prob. not notice this , but if anyone has let me know please.
Last edited by lastcowboy; Oct 14, 2014 at 07:14 PM.
Pro
Joined: Jun 2014
Posts: 696
Likes: 145
St. Jude Donor '15
So I followed all the recommended track procedures on the car (dealer did all the fluids, installed the cooling rings) and after two track days, my rotors are exhibiting surface cracks. I think they should last longer than two track days and less than 2000 miles on the car. Dealer doesn't believe GM will cover any part of the rotor cost; hoping you have a different opinion.
While we're at it, I'm seeing multiple part numbers for the 2015 Z51 Rotors (front and rear) - could you also please give me the correct part numbers?
While we're at it, I'm seeing multiple part numbers for the 2015 Z51 Rotors (front and rear) - could you also please give me the correct part numbers?
22 Hypersonic Grey HTC
Joined: Mar 2014
Posts: 506
Likes: 144
From: Austin Texas
something else i've noticed when driving with the window down the a6 will go through what seems to be down shiftting and then i hear what i first thought was metal twisting or a small cherp sound from under the car .now i don't know if its the 4c. values closing or what it is but it dosen't sound normal( well gm would prob. say it was ) . it's not real loud but loud enough for me to hear with the window down.
some will prob. not notice this , but if anyone has let me know please.
some will prob. not notice this , but if anyone has let me know please.
When the Drive Belt Tensioner was leaking hydraulic fluid on my A6 I could hear a chirpy noise when in V4 and rpm's around 1300-1500 rpm's, at any speed. Dealer replaced the faulty tensioner under warranty. It is a known issue and there are PIP bulletins on this.
Melting Slicks
Joined: Dec 2009
Posts: 3,213
Likes: 17
i had ck'ed the tensioner about 2wk's ago when someone had pm'd me about having thiers replaced i could find no leak everything looked fine . but who knows
thank you for your input ....
Last edited by lastcowboy; Oct 16, 2014 at 06:48 AM.
Intermediate
Joined: Apr 2013
Posts: 31
Likes: 0
From: Lubbock Texas
thank you for your reply . the more i woud hear this the more it did sound like a chirp and thats about the same rpm. but its like one chirp when your slowing to a stop;
i had ck'ed the tensioner about 2wk's ago when someone had pm'd me about having thiers replaced i could find no leak everything looked fine . but who knows thank you for your input ....
i had ck'ed the tensioner about 2wk's ago when someone had pm'd me about having thiers replaced i could find no leak everything looked fine . but who knows
thank you for your input ....
Cruising
Joined: Sep 2013
Posts: 12
Likes: 0
From: Lincoln NE
I have the exact same issue.
I will be curious to find out what the dealership tell you.
Please let me know and thank you!!
And...best of luck![/QUOTE]
I have the same issue. All brake pads were changed. Still did it. Then changed rear pads and rotors. No repeat yet. Let me know how you came out.
Tom
I will be curious to find out what the dealership tell you.
Please let me know and thank you!!
And...best of luck![/QUOTE]
I have the same issue. All brake pads were changed. Still did it. Then changed rear pads and rotors. No repeat yet. Let me know how you came out.
Tom
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Burning Brakes
Joined: Oct 2010
Posts: 832
Likes: 511
Get ANYTHING EXCEPT run flats.When I lived in Ct., I hit a 4 in pothole and got a bubble on both right side tires(car was one week old) Goodyear's reply,"Too bad !"
The owner of the local Chevy dealer was a father of a student and basketball player of mine. He comped BOTH tires. Had I not been in that position, I would have been out 1K.
Goodyear doesn't back them and they're $$$$$$ .
I switched to Goodrich on one car and Bridgestones on the other.
BOTH were significantly better for me.
The owner of the local Chevy dealer was a father of a student and basketball player of mine. He comped BOTH tires. Had I not been in that position, I would have been out 1K.
Goodyear doesn't back them and they're $$$$$$ .
I switched to Goodrich on one car and Bridgestones on the other.
BOTH were significantly better for me.
Le Mans Master
Joined: Apr 2012
Posts: 6,956
Likes: 4,811
From: Camden SC
Get ANYTHING EXCEPT run flats.When I lived in Ct., I hit a 4 in pothole and got a bubble on both right side tires(car was one week old) Goodyear's reply,"Too bad !"
The owner of the local Chevy dealer was a father of a student and basketball player of mine. He comped BOTH tires. Had I not been in that position, I would have been out 1K.
Goodyear doesn't back them and they're $$$$$$ .
I switched to Goodrich on one car and Bridgestones on the other.
BOTH were significantly better for me.
The owner of the local Chevy dealer was a father of a student and basketball player of mine. He comped BOTH tires. Had I not been in that position, I would have been out 1K.
Goodyear doesn't back them and they're $$$$$$ .
I switched to Goodrich on one car and Bridgestones on the other.
BOTH were significantly better for me.
Melting Slicks
Joined: Dec 2009
Posts: 3,213
Likes: 17
Get ANYTHING EXCEPT run flats.When I lived in Ct., I hit a 4 in pothole and got a bubble on both right side tires(car was one week old) Goodyear's reply,"Too bad !"
The owner of the local Chevy dealer was a father of a student and basketball player of mine. He comped BOTH tires. Had I not been in that position, I would have been out 1K.
Goodyear doesn't back them and they're $$$$$$ .
I switched to Goodrich on one car and Bridgestones on the other.
BOTH were significantly better for me.
The owner of the local Chevy dealer was a father of a student and basketball player of mine. He comped BOTH tires. Had I not been in that position, I would have been out 1K.
Goodyear doesn't back them and they're $$$$$$ .
I switched to Goodrich on one car and Bridgestones on the other.
BOTH were significantly better for me.
road h. for 12k for anything . 50 mils on one vette 09 ,screw in sidewall ,dealer was going to sell me one but didnt have it in stock .
went to d. tire prepared to drop some $$$ guy there told me they were under g.y. wart. ....o $$$$...called the dealer and told him , he said he knew nothing about it
.used this same wart. on 2011and 2013 gs hope i don't haave to go through that on the c7
Burning Brakes
Joined: Oct 2010
Posts: 832
Likes: 511
thier are alot of people that don't know that g.y. has a wart. that covers
road h. for 12k for anything . 50 mils on one vette 09 ,screw in sidewall ,dealer was going to sell me one but didnt have it in stock .
went to d. tire prepared to drop some $$$ guy there told me they were under g.y. wart. ....o $$$$...called the dealer and told him , he said he knew nothing about it.used this same wart. on 2011and 2013 gs hope i don't haave to go through that on the c7
road h. for 12k for anything . 50 mils on one vette 09 ,screw in sidewall ,dealer was going to sell me one but didnt have it in stock .
went to d. tire prepared to drop some $$$ guy there told me they were under g.y. wart. ....o $$$$...called the dealer and told him , he said he knew nothing about it
.used this same wart. on 2011and 2013 gs hope i don't haave to go through that on the c7I'm glad you had a more cooperative dealer.
For me, I'm done with Goodyear FOREVER.
Intermediate
Joined: Jul 2014
Posts: 42
Likes: 0
Issues with Driving Modes
2015 Stingray, just picked it up 2 days ago. I noticed today, when I would switch to example form Sport Mode, then to Track Mode ( I know not recommended for Street) just to see the difference in steering and exhaust the car when I went to go back to Sport Mode or any Mode, automatically skips all and goes to Weather Mode. Once in Weather Mode, I try to switch and skips all and goes back to Track Mode. I am hoping it is something I do not know, or is this a glitch? Any help would be appreciated. I am also turning the **** slow and waiting for it to engage before I switch out of it. Help please, while I will not be driving in track mode, I do not want something that is not working properly. Thank you!
Also it does it does sometimes work normal, there does not seem to be a rhyme or reason. Closest thing I could do is when I take off traction control and go to Track , then switch back, always seems to go back to Weather mode.
Also it does it does sometimes work normal, there does not seem to be a rhyme or reason. Closest thing I could do is when I take off traction control and go to Track , then switch back, always seems to go back to Weather mode.
Last edited by sabatage69; Oct 17, 2014 at 10:38 PM. Reason: added something I tried
Advanced
Joined: Aug 2014
Posts: 63
Likes: 0
From: Morgan Hill CA
Seems to be a common problem. My 2014 does the same thing. For me it has only been an annoyance; I've always been able to wrestle the dang **** into the proper mode eventually. I would bet that GM won't do anything until somebody threatens a lemon lawsuit for this stupid little problem.
Intermediate
Joined: Jul 2014
Posts: 34
Likes: 4
From: Atlanta GA
Intermediate
Joined: Jul 2014
Posts: 34
Likes: 4
From: Atlanta GA
2015 Stingray, just picked it up 2 days ago. I noticed today, when I would switch to example form Sport Mode, then to Track Mode ( I know not recommended for Street) just to see the difference in steering and exhaust the car when I went to go back to Sport Mode or any Mode, automatically skips all and goes to Weather Mode. Once in Weather Mode, I try to switch and skips all and goes back to Track Mode. I am hoping it is something I do not know, or is this a glitch? Any help would be appreciated. I am also turning the **** slow and waiting for it to engage before I switch out of it. Help please, while I will not be driving in track mode, I do not want something that is not working properly. Thank you!
Also it does it does sometimes work normal, there does not seem to be a rhyme or reason. Closest thing I could do is when I take off traction control and go to Track , then switch back, always seems to go back to Weather mode.
Also it does it does sometimes work normal, there does not seem to be a rhyme or reason. Closest thing I could do is when I take off traction control and go to Track , then switch back, always seems to go back to Weather mode.
Intermediate
Joined: Jul 2014
Posts: 34
Likes: 4
From: Atlanta GA
Odd feeling when making tight turns - slowly
I get a "funny" feeling in the wheel when I make a tight turn going very slowly (less than 5 mph) - it "feels" like it is coming from the rear. Seems smooth when going over 10MPH -
Any thoughts?
Any thoughts?
Melting Slicks
Joined: Oct 2003
Posts: 2,834
Likes: 91
From: California
http://en.wikipedia.org/wiki/Ackermann_steering_geometry
You can also google "ackerman effect" for more details.
Instructor
Joined: Sep 2014
Posts: 111
Likes: 3
St. Jude Donor '17
"Tire Chatter/Hop
When driving at slow speeds and in
very tight turns, the vehicle may
have tire chatter/hop. This condition
is normal and the vehicle does not
require service."