What does AFM stand for?

Asked by Aug 25, 2014 at 10:32 AM about the 2012 Chevrolet Silverado 1500 LT Ext. Cab 4WD

Question type: General

I know it is the system that turns 4 cylinders on and off.  But, what does it stand for?
I want to know how much it might cost me to have it turned off completely.

3 Answers


Active Fuel Management. Horable idea now. And back in the 1980's when Government Motors called it 4-6-8.

3 of 3 people found this helpful.

Yes, it was a Cadillac exclusive in 1981. My Sister had it on her '81 Eldorado. It was the V8 368 cubic inch. Cadillac called it the V8-6-4. Her's worked fine but most didn't. It really did improve gas mileage when it worked. I'd suggest leaving it alone. You're probably still under warranty. HTH. -Jim

2 of 2 people found this helpful.

It's more a question. I just bought a 2011 Silverado V6 5.3L Crew Cab, and when I get to about 60 mph my truck starts to do this rev or something is switching on or off in the engine! The rpm's are going up slightly! Is this the AFM causing this?

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

Silverado 1500

Looking for a Used Silverado 1500 in your area?

CarGurus has 181,202 nationwide Silverado 1500 listings starting at $250.


Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,350
#2 Rowefast
Reputation 1,930
#3 Silverado_owner_2006
Reputation 1,650
View All

Related Models For Sale

Used GMC Sierra 1500
761 Great Deals out of 69,133 listings starting at $1,850
Used Ford F-150
2,059 Great Deals out of 207,350 listings starting at $1,499
Used Chevrolet Silverado 2500HD
301 Great Deals out of 28,182 listings starting at $2,495
Used Toyota Tundra
438 Great Deals out of 34,679 listings starting at $2,990
Used Toyota Tacoma
473 Great Deals out of 41,593 listings starting at $1,995
Used Chevrolet Tahoe
557 Great Deals out of 31,373 listings starting at $1,500
Used Ram 1500
905 Great Deals out of 112,646 listings starting at $6,386
Used Chevrolet Colorado
240 Great Deals out of 24,818 listings starting at $2,499
Used Chevrolet Camaro
245 Great Deals out of 31,195 listings starting at $369
Used Ford F-250 Super Duty
330 Great Deals out of 46,264 listings starting at $1,450
Used Ford Mustang
537 Great Deals out of 45,845 listings starting at $1,999
Used Nissan Titan
178 Great Deals out of 19,080 listings starting at $3,000

Used Cars For Sale

2013 Chevrolet Silverado 1500 LT Ext. Cab 4WD For Sale
23 Great Deals out of 1,168 listings starting at $12,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.