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Active Fuel Management Delete Kits #4591627
12/02/17 02:52 AM
12/02/17 02:52 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Pretty good information if you're thinking about deleting the AFM from your 2007 and later GM truck:

LINK

Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4591699
12/02/17 07:25 AM
12/02/17 07:25 AM
Joined: Jan 2011
Posts: 2,943
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 2,943
PV Az
That's a bit more involved than most of us are capable of. I'm hoping by 2016 GM has it figured out.

Interesting reading, thanks for the link.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4591725
12/02/17 07:59 AM
12/02/17 07:59 AM
Joined: Jun 2013
Posts: 1,037
iowa
Traction Offline
Traction  Offline
Joined: Jun 2013
Posts: 1,037
iowa
I just had my 2013 Tahoe AFM programmed out by a local shop, and bumped the shift points up a little for $150. Truck runs much smoother now and accelerates much better with less throttle now by staying in gear longer.

Last edited by Traction; 12/02/17 08:00 AM.

Certified Tire Service Instructor since 2009
50 Chevy Fire Truck
13 Tahoe Pursuit
97 C5 Corvette
00 BMW M Roadster
02 Camry
12 Camry
81 Camaro
55 Chevy C4
Re: Active Fuel Management Delete Kits [Re: AZjeff] #4591760
12/02/17 08:39 AM
12/02/17 08:39 AM
Joined: Sep 2010
Posts: 7,000
Texas
4WD Online confused
4WD  Online Confused
Joined: Sep 2010
Posts: 7,000
Texas
Originally Posted By: AZjeff
That's a bit more involved than most of us are capable of. I'm hoping by 2016 GM has it figured out.

Interesting reading, thanks for the link.


Iím going to hang in there too Ö itís a very smooth motor (way quieter than my ecoboost) Ö playing around I can keep it V4 up to 65-70 mph (flat land) Ö

Re: Active Fuel Management Delete Kits [Re: AZjeff] #4591794
12/02/17 09:02 AM
12/02/17 09:02 AM
Joined: Oct 2008
Posts: 19,091
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,091
Sunny Florida
Originally Posted By: AZjeff
That's a bit more involved than most of us are capable of. I'm hoping by 2016 GM has it figured out.

Interesting reading, thanks for the link.


It's very old news here as we have a few AFM equipped vehicles with zero issues. Pretty much all done now. Our oldest is a 2013 with 117k miles and zero problems. No oil use yet either. I watch it carefully.

Must be noted that the fuel mileage is amazing for a 3500 series long wheelbase van loaded to 9000 pounds every day!


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4591838
12/02/17 09:51 AM
12/02/17 09:51 AM
Joined: Nov 2011
Posts: 1,059
Lyndhurst NJ
Audios Offline
Audios  Offline
Joined: Nov 2011
Posts: 1,059
Lyndhurst NJ
Just dealt with this issue a week ago, posted in another thread. 07 Silverado, 110k on it. 3 cylinders shut down from the AFM and wouldn't come back. He took it to his "engine friend" who just swapped in a Jasper motor. 3 yr/100k warranty, so I guess well see how it goes.


2002 VW Golf TDI-Mobil 1 5/40 TDT
2007 Mercedes GL320 CDI Fuchs 5/40 GT Pro XTL
2005 BMW M3 BMW Twin Power 10/60
2003 BMW M5-Fuchs 5/40
1998 BMW M3/4/5 Fuchs 5/40
Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4591852
12/02/17 10:02 AM
12/02/17 10:02 AM
Joined: Jan 2011
Posts: 2,943
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 2,943
PV Az
That's one way to deal with AFM. Wonder what it would cost to have a mechanic make the changes?


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4591919
12/02/17 11:15 AM
12/02/17 11:15 AM
Joined: Nov 2011
Posts: 4,857
MTL, CANADA
Rolla07 Offline
Rolla07  Offline
Joined: Nov 2011
Posts: 4,857
MTL, CANADA
I was rather impressed with the gas mileage of a Silverado I rented last year with the 5.3L. It wasnt as fast as I thought it would be, but the gas mileage was quite impressive. I suppose as long as you have no issues associated to having AFM, its worth leaving it as is.


2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967

Re: Active Fuel Management Delete Kits [Re: Rolla07] #4591931
12/02/17 11:34 AM
12/02/17 11:34 AM
Joined: Oct 2008
Posts: 19,091
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,091
Sunny Florida
Originally Posted By: Rolla07
I was rather impressed with the gas mileage of a Silverado I rented last year with the 5.3L. It wasnt as fast as I thought it would be, but the gas mileage was quite impressive. I suppose as long as you have no issues associated to having AFM, its worth leaving it as is.


It varies tremendously across the trucks. I have no experience with AFM in GM cars. In our light duty trucks the programming is very annoying on earlier models. Transmission still shifts too soon and you are into AFM too early IMO. In our 3500 monster vans the shifts are delayed and the AFM stays out of sight, almost hard to notice.

Programming is the key to smooth cylinder deactivation for fuel economy. You can imagine the throttle programming required to change from 6 liters to 3 in a V8! A few mfgrs have it better than others. My Wife's RAM 5.7 is perfectly transparent, if it wasn't for the green indicator light you'd hardly be able to tell.

Like many modern vehicle features this is a shot at trying for the best CAFE numbers. Thank the people at the EPA.


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
Re: Active Fuel Management Delete Kits [Re: SteveSRT8] #4591949
12/02/17 12:04 PM
12/02/17 12:04 PM
Joined: Jan 2008
Posts: 10,682
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,682
OH
Originally Posted By: SteveSRT8
My Wife's RAM 5.7 is perfectly transparent, if it wasn't for the green indicator light you'd hardly be able to tell.


Hmmmm, that reminds me that I haven't seen the green eco light that comes on in the Camry when it's getting excellent mpg in a long time. I wonder if I accidentally disabled it when turning off the Maintenance Required light. Thanks for the reminder. smile

Re: Active Fuel Management Delete Kits [Re: AZjeff] #4592328
12/02/17 07:46 PM
12/02/17 07:46 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline OP
Merkava_4  Offline OP
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: AZjeff
That's a bit more involved than most of us are capable of.


I used to feel that way up until I was about 20 years old when I met my best friend who got me over the fear of mechanical things. After I learned how to change a water pump on my 1970 Mercury Cougar, I wasn't afraid of mechanical things anymore. We both had 1970 Mercury Cougars at the time. smile

Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4592377
12/02/17 08:35 PM
12/02/17 08:35 PM
Joined: Jan 2011
Posts: 2,943
PV Az
AZjeff Offline
AZjeff  Offline
Joined: Jan 2011
Posts: 2,943
PV Az
No fear of mechanical things here. If it was just the top end stuff without pulling the heads I might consider it down the road. Maybe doesn't matter, the parts might not exist for the 4.3 motor. Might tune out AFM after warranty.


86 Samurai 1.3 leftovers
14 RAV4 2.5 5W-20 PP
16 Silverado 1500 4.3, DI, AFM 5W-30 PP

The most important thing to do in your life is to not interfere with someone else's life. - Frank Zappa

Re: Active Fuel Management Delete Kits [Re: Merkava_4] #4691876
03/11/18 08:11 PM
03/11/18 08:11 PM
Joined: Oct 2012
Posts: 4,622
Taiwan
Ducked Offline
Ducked  Offline
Joined: Oct 2012
Posts: 4,622
Taiwan
Originally Posted By: Merkava_4
Originally Posted By: AZjeff
That's a bit more involved than most of us are capable of.


I used to feel that way up until I was about 20 years old when I met my best friend who got me over the fear of mechanical things. After I learned how to change a water pump on my 1970 Mercury Cougar, I wasn't afraid of mechanical things anymore. We both had 1970 Mercury Cougars at the time. smile


I probably wouldn't be afraid of a 1970 Mercury Cougar either (except maybe paying to insure and fuel it).

But for most people, those days are long gone.


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