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Old 08-25-2011, 05:12 AM   #15
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Quote:
Originally Posted by Bernardinetti View Post
Here is another (more recent) TSB from GM:

http://ww2.justanswer.com/uploads/Bl...afm_lifter.pdf

One thing I didnīt understand is why there are so many complaints about the AFM? I have my camaro for about two months now, and I canīt even notice when it kicks in (I really canīt tell when itīs engaged, even at cruise speed).

Whatīs the big deal about it (besides the AFM lifters issue)?
It's not a big deal imo. People like to complain. I've never heard my AFM either.
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Old 08-25-2011, 08:50 AM   #16
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Originally Posted by myold88 View Post
It's not a big deal imo. People like to complain. I've never heard my AFM either.
You can never satisfy everybody with a feature and how it behaves.

I happen to be one of those "complainers" since 4 cyl mode will kick in far too aggressively (speeds down to 20 MPH) and I can hear it via the exhaust sound (with stock exhaust or Borla Touring axle back). I have to drive up some steep hills to drive towards my home. Once I get up to about 20 MPH going up the steep incline of the hills around my home, I can feel the car go into 4 cyl mode and hear it. While in 4 cyl mode the car begins to struggle a bit because it's going up hill so I have to push the accelerator pedal a bit more to compensate for the 4 cyl mode and then it goes back to 8 cyl mode and then it's starting to move too fast for the residential area that I'm driving in. I then have to let off of the accelerator pedal a bit and then it jumps back into 4 cyl mode and the cycle repeats until I get to my house.

If AFM is not a bother to you, then great, but don't simply dismiss those of us that have driving patterns/requirements that bring out the nastiness of AFM and cause it to be annoyance to the driver.
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Old 08-31-2011, 10:15 PM   #17
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i too have had this same problem and 3 different dealers said it was "normal" now that i have a tsb printout to back me, i hope they re consider. ill give them a call tomorrow n see what they say. thanks for all the help fellas
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Old 08-31-2011, 10:56 PM   #18
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Does that sound even semi "normal" to anyone? NO.

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Old 09-01-2011, 05:59 AM   #19
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Hearing the lifters that loud in a video does not sound good.
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Old 09-01-2011, 06:44 AM   #20
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I heard the lifters as well on my car. I hated hearing a new car tap so I thought about it and came to conclusion even with a warranty service techs don't want to fix your car. Then I asked myself do I really want them to touch my car? Go in for one thing another problem returned to me possibly.
I had a ls3 conversion with compression bump and a cam added
Best decision I ever made.

Afm is bs
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Old 09-01-2011, 07:01 AM   #21
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Can anyone tell me how to get in touch with GM. I have a issue with my 6.0 2500 HD GMC truck. They replaced cam and lifters last week due to not enough oil. Got it back and oil prssure had been running 10 psig at idle. Called service department & they gave me a bullitin saying that it was normal. Ok fine. Well yesterday i am going home and beep beep beep beep. I WAS LIKE WHAT THE HELL. Oil light comes on so i shut it down. Now i am not a dummy here but i think i would like a new engine. There has got to be damage after all this. Can anyone help in this matter to get in touch with GM.
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Old 09-01-2011, 08:35 AM   #22
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Quote:
Originally Posted by ibznu2010 View Post
Can anyone tell me how to get in touch with GM. I have a issue with my 6.0 2500 HD GMC truck. They replaced cam and lifters last week due to not enough oil. Got it back and oil prssure had been running 10 psig at idle. Called service department & they gave me a bullitin saying that it was normal. Ok fine. Well yesterday i am going home and beep beep beep beep. I WAS LIKE WHAT THE HELL. Oil light comes on so i shut it down. Now i am not a dummy here but i think i would like a new engine. There has got to be damage after all this. Can anyone help in this matter to get in touch with GM.
Search the member list for Jeff Morris here and he should be able to help you...
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Old 09-01-2011, 02:39 PM   #23
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ibznu2010, could you send me a description of what is going on with your truck? I'd like to see what I can do to assist you.

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Old 09-08-2011, 03:50 PM   #24
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Hmmm....maybe I need to take my A6 in for this TSB. I was hearing ticking sounds when I would turn my car on, but then it went away. A very new symptom is that I hear the same exact ticking sound when I accelerate.
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Old 09-09-2011, 01:08 AM   #25
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Quote:
Originally Posted by Jekyll-N-Hyde View Post
I heard the lifters as well on my car. I hated hearing a new car tap so I thought about it and came to conclusion even with a warranty service techs don't want to fix your car. Then I asked myself do I really want them to touch my car? Go in for one thing another problem returned to me possibly.
I had a ls3 conversion with compression bump and a cam added
Best decision I ever made.

Afm is bs
Same here, best thing I ever did to my car.
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Old 09-13-2011, 11:48 AM   #26
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So, I took my car to the dealer today for the ticking sound under acceleration. I demonstrated it to the service advisor, and about 20 minutes later he came back and said that it might indeed be the lifters that need to be replaced. I spoke to the tech and he also said that it could be the lifters or a valve leak. Either way, they are keeping my car for an unforeseen amount of time :(
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Old 09-13-2011, 02:45 PM   #27
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Iwantone2, hopefully they are able to get your vehicle back to you in a timely manner and hopefully they keep you up to date on how your repair is going. Let us know how the repair goes for you.

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Old 09-13-2011, 05:11 PM   #28
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Thanks Jeff! I actually heard from my service advisor and he said something along the lines of replacing the lifters, camshaft, pushrods, seals, and gaskets. I'll keep everyone posted.
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