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Do I have AFM, how do I tell?

Do I have AFM, how do I tell?

Postby jimnfor [OP] » Jun 25 2013, 8:47pm

I apologize if this has been asked a million times (i did search as well). What is the designator or indicator that a truck has AFM? I have a 2011 WT 6.0 gasser.
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Re: Do I have AFM, how do I tell?

Postby donniesd » Jun 25 2013, 8:51pm

The 6.0 Did come with it.

You can tell by looking up what motor sizes AFM comes on.
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Re: Do I have AFM, how do I tell?

Postby jimnfor [OP] » Jun 25 2013, 8:52pm

well there you go! thanks for the quick reply.
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Re: Do I have AFM, how do I tell?

Postby semicrazy » Jun 25 2013, 9:09pm

Go to compnine.com enter your vin it will tell you. I think you have it. Only the 4.8l doesn't.
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Re: Do I have AFM, how do I tell?

Postby Tazman » Jun 27 2013, 1:23am

The one thing i found on AFM and the 6.0 is if its a steel block it does not have AFM,Aluminum blocks do.Not sure if this is set in stone though.Ill look for the site i found it on.
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Re: Do I have AFM, how do I tell?

Postby TJEli » Jul 01 2013, 10:47pm

The 2500s (iron block) do not have it. Only the L76 aluminum Vortec Max 6.0Ls had it. So the answer is... no. You do not have it.

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Re: Do I have AFM, how do I tell?

Postby Meanjoe » Mar 04 2014, 11:58am

I have the Silverado 1WT model, and how do I know if I am in V4 or V8? There is no indicator on my truck dash like there is on the 1LT Silverado's....
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Re: Do I have AFM, how do I tell?

Postby dalejrfan88 » Mar 04 2014, 12:24pm

The way you can tell is by checking your dipstick! If your 2 quarts low on oil you have AFM. :( in all seriousness, the sticker by the fan shroud should have it written. Also my master cylinder has a AFM tag on the booster line...if your truck is equipped you can also push the buttons on your dash to see the instant economy and will tell you when u are in 4cylinder mode.. if you have a wt there is no indication you are in 4 mode you should feel it slightly and hear it change tones and may shudder a little. A guy I work with has a wt. And it shuddered so much it cracked a transmission tube
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Re: Do I have AFM, how do I tell?

Postby 09chevyman » Mar 04 2014, 12:49pm

Meanjoe wrote:I have the Silverado 1WT model, and how do I know if I am in V4 or V8? There is no indicator on my truck dash like there is on the 1LT Silverado's....


Before I got my dic upgrade, I could tell a slight difference in exhaust tone. The new 2014's are supposed to be seamless though when the change happens. So it may be a little harder to tell this way or with a little shudder like said above. Your rpm's may also drop just slightly also, when on open flat roads at a constant speed, this is when AFM normally will kick in.
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Re: Do I have AFM, how do I tell?

Postby Meanjoe » Mar 04 2014, 12:59pm

Thank you for the reply....I really don't feel a shudder, it seems to be rather smooth transition, and I don't hear an exhaust tone change either. But, I only have 2k miles on her. I will play around with my DIC(K), and see what happens....
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