AFM Noise
Thread Starter
Heel & Toe
Joined: Jul 2012
Posts: 24
Likes: 0
AFM Noise
I picked up a 2014 Z51 A6 about 6 months ago. Are there any solutions that will reduce or get ride of those ridiculous sounds under the hood when the AFM is doing its V4/V8 thing. I know if you go to M and use the paddles it goings to V8. I know that you can buy a plug in devise for $200.00 that will keep it in V8 100% of the time. I would have thought by now someone, Not GM of course, would have a work around. I am not sure what they did to solve the noise issue in the new Vettes. Thanks, first Thread.
Racer
Joined: Jun 1999
Posts: 406
Likes: 90
From: Chandler Arizona
Not sure what you mean by V4/V8 sounds my 17 GS sounds no different in either mode. If you don’t want to use a range module then DiabloSport offers a handheld tuner that turns off afm in the software but this approach has possible warranty implications. You might consider getting the noise diagnosed at a competent shop first.
Thread Starter
Heel & Toe
Joined: Jul 2012
Posts: 24
Likes: 0
Not sure what you mean by V4/V8 sounds my 17 GS sounds no different in either mode. If you don’t want to use a range module then DiabloSport offers a handheld tuner that turns off afm in the software but this approach has possible warranty implications. You might consider getting the noise diagnosed at a competent shop first.
Racer
Joined: Jun 1999
Posts: 406
Likes: 90
From: Chandler Arizona
If the noise bothers you that much why not just install a Range AFM Disabler. Just plug it in and go. Many of us including myself use one. I can’t imagine that an official GM fix would be any cheaper unless you have a warranty that would take care of it. Programming it out with a tuner would be more involved and potentially more costly.
Thread Starter
Heel & Toe
Joined: Jul 2012
Posts: 24
Likes: 0
If the noise bothers you that much why not just install a Range AFM Disabler. Just plug it in and go. Many of us including myself use one. I can’t imagine that an official GM fix would be any cheaper unless you have a warranty that would take care of it. Programming it out with a tuner would be more involved and potentially more costly.
Instructor
Joined: Nov 2017
Posts: 181
Likes: 104
I have not read of any mechanical change to the engine 2014-18. The A6 transmission in 2014 was changed to the A8 in 2015 and there have been 3 (?) updates to the torque converter, but AFAIK nothing to the engine AFM mechanicals per se.
if your car is making an objectionable noise during the V8-V4 transition, and you're sure it's from the engine, I think its an indication that there's something abnormal going on in your particular engine and you need to have a mechanic look at it.
if your car is making an objectionable noise during the V8-V4 transition, and you're sure it's from the engine, I think its an indication that there's something abnormal going on in your particular engine and you need to have a mechanic look at it.
Safety Car
Joined: Dec 2012
Posts: 3,839
Likes: 1,856
From: St. Louis Metro East IL
There were issues noted with the belt tensioner making noise in V4 mode. Search the forum for TENSIONER. Here's one representative thread:
https://www.corvetteforum.com/forums...n-v4-mode.html
Good luck and enjoy your Vette!
Ron
https://www.corvetteforum.com/forums...n-v4-mode.html
Good luck and enjoy your Vette!
Ron
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