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Old 09-27-2010, 10:25 PM   #18
David79z28
 
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Quote:
Originally Posted by Chevrolet Customer Svc View Post
David79z28, could you send your case number so that I can review it? Also when we give our customers the resolution for their case we are given (most times) the resolution from the dealership as per their diagnosis of your vehicle and situation at the time. This is why in some cases we do suggest that you take your vehicle to another dealership to see if the other dealership can offer any insight into the problem with the vehicle and possibly give a different resolution. It doesn't work all the time but many times it has been a determining factor in positive outcomes. I hope that answers your question. I hope to hear from you soon.

Jeff Morris, Chevrolet Customer Service
Thanks, I'll get that from Josh the next time he calls.

THANKS AGAIN!!
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Old 10-03-2010, 01:32 PM   #19
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Got my car back. No changes were made and was told again that this was normal. This can't be the case. GM had got to come up with a fix.

2ssRS. The numbers on my maf located just under the clip are,
"AFH70M-43A" on one side and "15865761" on the other. I didn't take it out to see if there were any on the inside.

Customer Svc. It almost feels like the timing is off slightly. Mine slowly gets better to the point where it runs fantastic. Then about a week after it seems to fix itself, I'll get a loud "gurgle" (for lack of a better term) out of the muffler on a cold start in the morning. That's when the hesitation and surging starts all over again. I only have 3k miles now, and a lifter has started tapping on all cold starts.
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Old 11-28-2010, 08:57 AM   #20
Ricker 54
 
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Thumbs down HESITATION

My 2010 ss automatic is hesitating also. Dealer says they can not find any problem. It has 1200 miles on it ,and i get mad every time i drive it. HELP.Davi79z28 did Jeff Morris info heip you out?

Last edited by Ricker 54; 11-28-2010 at 09:06 AM. Reason: additional info
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Old 11-28-2010, 10:03 AM   #21
David79z28
 
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Originally Posted by Ricker 54 View Post
My 2010 ss automatic is hesitating also. Dealer says they can not find any problem. It has 1200 miles on it ,and i get mad every time i drive it. HELP.Davi79z28 did Jeff Morris info heip you out?

No, he just told me that my issue was open. We don't drive it much and it didn't hesitate the past couple of times we drove it.

The dealer and Gm stopped following up with me...

It has 2200 miles on it now. I hope it worked itself out...
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Old 11-28-2010, 01:38 PM   #22
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GM has not been up front with the whole AFM issue. If I was told that when AFM enables and disables, I would some times feel hesitation, surging and exhaust noise and that would allow me to save 1 mile per gal (or ever how much) then I could have made a more informed decision as to weather I wanted to have a car with that system. I talked to salesman at 2 dealers about AFM and both said u would not notice the operation. Its been used on PUs for years. I was blind sided by this.

Because of this crap we loose 25HP, have a more complicated system and have to put up with hesitation, surging and exhaust noise. And to add to the insult we have to pay a 1185 premium.

Last edited by cmore; 11-28-2010 at 09:03 PM.
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Old 11-28-2010, 08:00 PM   #23
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Just put about 100 miles on mine and the hesitation is gone. Somehow it corrected itself.

BTW: I have a 2010 Silverado with AFM and it NEVER hesitates...
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Old 11-28-2010, 09:33 PM   #24
Ricker 54
 
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Junk SS

David79z28 thanks for reply. Planning on stopping at dealership this week. They were supposed to follow up with GM. LOL............. If you would like to exchange phone numbers let me know. Rick
I will check back Monday.
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Old 02-19-2011, 09:40 PM   #25
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Did anyone get a resolution on this? I just drove home a new SS RS (put miles 31-76 on it) and noticed the surge during cruise was pretty bad. Almost like someone is slightly tapping on the breaks just slightly every few seconds.
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Old 02-19-2011, 09:49 PM   #26
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Happens to my 2011 2SS at 65-70MPH. I went WOT and it went away
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Old 02-19-2011, 10:09 PM   #27
David79z28
 
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Quote:
Originally Posted by bash535i View Post
Did anyone get a resolution on this? I just drove home a new SS RS (put miles 31-76 on it) and noticed the surge during cruise was pretty bad. Almost like someone is slightly tapping on the breaks just slightly every few seconds.
Mine stopped hesitating!! Just stopped one day... According to my dealer they have had a couple of other owners experience the hesitation and it stopped for them also.

I have put about 2000 miles on it since it last hesitated.

They let me drive another SS on their lot and it did it as well...
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Old 03-15-2011, 05:54 PM   #28
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I am having the same issue with my 2011. It is driving me nuts cause I didn't pay that much money for a car to run like this. It didn't do it at first when I bought it and then around 800 miles I really started to notice it. Mine does it at high and low speeds and is almost not enjoyable to drive. To get rid of it I have to give it more gas. I constantly use premium gas. The dealer I first took it into said it was a driveline droan and then later said it was the AFM and was normal operation. I don't understand how anyone could say this is normal operation for a $40k car. Sorry about my rants and raves just really tired of this issue as I am sure many of you are too.
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Old 03-15-2011, 08:11 PM   #29
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Quote:
Originally Posted by Hot Lava View Post
I am having the same issue with my 2011. It is driving me nuts cause I didn't pay that much money for a car to run like this. It didn't do it at first when I bought it and then around 800 miles I really started to notice it. Mine does it at high and low speeds and is almost not enjoyable to drive. To get rid of it I have to give it more gas. I constantly use premium gas. The dealer I first took it into said it was a driveline droan and then later said it was the AFM and was normal operation. I don't understand how anyone could say this is normal operation for a $40k car. Sorry about my rants and raves just really tired of this issue as I am sure many of you are too.


Mine now has about 6700 miles and is still doing it.
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Old 03-15-2011, 08:19 PM   #30
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Quote:
Originally Posted by cmore View Post
GM has not been up front with the whole AFM issue. If I was told that when AFM enables and disables, I would some times feel hesitation, surging and exhaust noise and that would allow me to save 1 mile per gal (or ever how much) then I could have made a more informed decision as to weather I wanted to have a car with that system. I talked to salesman at 2 dealers about AFM and both said u would not notice the operation. Its been used on PUs for years. I was blind sided by this.

Because of this crap we loose 25HP, have a more complicated system and have to put up with hesitation, surging and exhaust noise. And to add to the insult we have to pay a 1185 premium.
You give up 25 peak hp, but the flatter torque curve that comes with variable valve timing actually gives you MORE hp at engine speeds under 4200 rpm (the range you operate in 90% of the time).

AFM is noticeable, for sure, but fortunately, the seamless A6 tranny more than makes up for it.

But, if you don't believe me, get a manual.
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Old 03-15-2011, 08:21 PM   #31
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Would take to big of a finical hit to swap to a manual. Just wish they would have a way to turn it off.
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Old 03-16-2011, 06:23 AM   #32
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Welcome to my world! I've got 26K miles on my car now (2SS/automatic) and I noticed this from day 1 after picking up my car (ordered as soon as I could, paid $2500.00 premium!). My dealer told me to "call Chevrolet" - I did - what a joke! No help at all, pretty much told me to live with it - it's "how it's designed to work" according to them. AFM is not a feature, it is totally riduculous the way it works. Since about 1K miles I've driven the car with the paddles to avoid having to deal with the herky-jerky crap of the AFM. I owned an '02 Camaro SS Anniversary Edition before this car, and a '99 SS before that. When I've had enough of dealing with my "new" Camaro with the AFM I'll buy something else. I told Chevrolet "customer service?" that I would NEVER buy another GM product and they told me to "have a nice day". This is the "new" GM they adverstise on TV. I think a competitor designed this to drive customers away from GM - it worked for me!
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Old 03-16-2011, 03:25 PM   #33
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Has anyone considered using a tuner to turn off the AFM? I'd do this berfore dealing with the problem if GM can't fix it, and especially before considering trading the car in.
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Old 03-16-2011, 04:15 PM   #34
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Yes, but not ready to ditch the warranty, just yet.
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