Anyone who has owned a GM with the infamous “AFM” or “active fuel management engine” knows how big of a fumble the government bailed out automaker made coming up with this mess. From lifters that break to cams that get wiped out to the 5qts of oil they will burn between changes, there is no end to the list of problems these engine have. Here in the PRNY (Peoples Republic Of NY) or anywhere in the rust belt the only thing that wears out faster than the AFM engines in these GMT900 series trucks is the frame. On a quiet night around here you can listen to the frame rotting away. So with that being said customers in these parts rarely want to fix these oil guzzlers when they come in with one of the AFM cylinders sucking so much oil it fouls out a spark plug and causes a misfire with a flashing engine light. So in this video I show you a common practice around our shop to keep these junkers going while they are waiting for the frame to rot away. Oh and don’t take my word for it that the AFM engines are a disaster, just Google “Problems with AFM engines” and pull up a chair.
-Enjoy!
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained.
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What do you think of the new AFM? On new models?
I live in S Florida and I'm working on an 02 right now, no rust at all. That's one thing I don't miss about Jersey.
I also try to save my people $ when I can, an honest mechanic is hard to find.
GM ought to have gone out of business, Chevy and all of the names would have come back with a new owner. Everything would have been fine. nope bailout at our expense and this is what they gave us.
I had an 06 Envoy Denali 5.3 with the DOD – replaced cam and lifters twice 44k miles
Down the line I got an 04 V8 Envoy and never had a problem 256k
AFM is great! It's GREEN! That's all that needs to be said to make it good…
My 15 had a lifter break at 55k
I have a 14 v-6 Silverado with almost 60K miles. I can't trust it so I'm looking for a Frontier or Tacoma to replace it. I'm done with GM!
I call them 60,000 mile throw-aways, just like a bic lighter, limited life.
Definitely surprising people still buy GM products
In most cases when you have the computer reprogrammed to keep the engine in V-8 mode ALL the time you be blessed with an easy fix….They do have an updated valve LEFT valve cover replacement that will stop massive oil consumption on the older 2007-2008's..I have a 2008 tahoe that was smoking and using oil…Put a "catch can" on it and it would be full at the end of the day…Put the up dated valve cover on the driver side and oil consumption STOPPED…This Tahoe currently has 323,000 miles…I also purchased a 2007 LTZ tahoe with 341,000 miles with a bad rear end…All the cheap fixes had been done to the engine already..It runs whisper quite with no lifter noise…It also is programmed for V-8 mode at ALL times…Even you get one of these engines that needs new lifters and you do a full delete it is worth it because once you re configure these engines back to old school you are home free… I am in the car business and at least in my area, Chevy/GMC trucks and Tahoe/Yukon's are what everyone wants.. Many dealers do all the "fixes" before the vehicle starts acting up..Catching them before a lifter starts acting up are turns sideways is the key…Amzoil 10w40 full synthetic usually will quite down noisy lifters but the stuff is over 100 dollars for two gallon jugs…Fresh10w40 Mobil 1 will work at times but it's short lived…