Active Fuel Management

[tnchapman]

I have a 2008 Silverado Crew Cab 4 x 4 with 5.3 L engine with Active Fuel Management. I don't have the Trip computer buttons, only the stick beside the Speedometer. I don't see any indication that the AFM is working when I drive, no message, light or anything. The dealer told me to drive by and he would help me figure out hot to turn on the indicator.

Does anyone know if indeed there is an indicator and how to turn the indicator on?

 

Thanks

[Heysdad]

You should be able to feel it change over to 4 and back to 8. I sure can on mine. It even sounds different.

[sno]

You'll want to perform the upgrade as documented in THIS THREAD.

[VMax2007]

You should be able to feel it change over to 4 and back to 8. I sure can on mine. It even sounds different.

 

Really? I have never felt or heard mine changeover....ever. It is completely unperceptible.

[tobias]

You should be able to feel it change over to 4 and back to 8. I sure can on mine. It even sounds different.

 

Really? I have never felt or heard mine changeover....ever. It is completely unperceptible.

 

 

With my Magnaflow system, you can hear a little difference. Power wise, the transition is seamless.

[KantKwit]

You should be able to feel it change over to 4 and back to 8. I sure can on mine. It even sounds different.

 

Really? I have never felt or heard mine changeover....ever. It is completely unperceptible.

 

 

With my Magnaflow system, you can hear a little difference. Power wise, the transition is seamless.

 

 

If it weren't for the instant economy display, I'd never know.

[alaska511]

You should be able to feel it change over to 4 and back to 8. I sure can on mine. It even sounds different.

 

Really? I have never felt or heard mine changeover....ever. It is completely unperceptible.

 

 

With my Magnaflow system, you can hear a little difference. Power wise, the transition is seamless.

 

 

If it weren't for the instant economy display, I'd never know.

 

 

ditto

[pm26]

I cant's tell when mine kicks in. Whoops, I do not have the AFM.

[ChickenWing]

I cant tell either, unless I'm looking at the instant economy display. As for seeing it, you'll want to do the DIC upgrade. Easy and worth it.

[98 Z71 SLT]

You should be able to feel it change over to 4 and back to 8. I sure can on mine. It even sounds different.

 

Really? I have never felt or heard mine changeover....ever. It is completely unperceptible.

 

 

 

The 6.0 engine for 2007 is NOT EQUIPPED with AFM...

 

anybody that tells you otherwise is lying

 

Starting 2008, the 6.0 is VVT and AFM

[VMax2007]

 

The 6.0 engine for 2007 is NOT EQUIPPED with AFM...

 

anybody that tells you otherwise is lying

 

Starting 2008, the 6.0 is VVT and AFM

 

Oh really? LMAO!!! Funny how my truck has both AFM and VVT and my DIC displays the 4-mode status then. You really might not want to question this since I HAVE ONE!!!

 

The 6.2 does not have AFM, but it does have VVT.

 

The 6.0's in the 3/4 tons also do NOT have AFM.

[98 Z71 SLT]

...was thinking 6.2

 

...sorry fellas

[VMax2007]

...was thinking 6.2

 

...sorry fellas

 

Your forgiven, this time.

 

Do the 2008 6.2's have AFM? I didn't think so, this would be news to me.

[hubbycap]

I couldn't tell in the beginning except when I had instant mpg displayed on the DIC. Later I could hear a flutter exaust sound, but not really objectionable. Now I run the DIC blank and don't give a d**n.

[silveradocoa]

aye can feel it in mine, feels like it misses for about 1/2 a second goin down the interstate. city drivin no u cant feel it