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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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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Thankfully I have a 2008 5.3. 90,000 on the odometer. So far always used Mobile 1 replaced drivers side valve cover to the updated one and added a catch can. You can’t believe how much oil is always in that catch can. Ridiculous
GM revised the left valve cover. They are cheap. You should replace the valve cover on customers engines. It cuts down the amount of oil is sucked into the intake. It has nothing to do with cylinder deactivation. I just replaced the intake gaskets and the valve cover on my 4.8 which never had cylinder deactivation. When the intake came off there was quiet a bit of oil inside of it. I researched why there would be oil in the intake which brought me to a GM TSB. The old designed allowed for too much oil to be sucked up by the pcv system. The new left valve cover fixes this.
Come on man! Stop beating around the bush. What do you REALLY think of AFM? Tell it to me STRAIGHT!
Loved my 94 Oldsmobile Cutlass. Drank oil at Least a qt in between changes. My 04 chevy venture same. My 08 Pontiac Grand Prix just hit 100k. Been getting a qt in between changes now for a couple cycles. Hmmm GM… my 99 XJ? Now that I’ve fixed most of the common leak spots she doesn’t need any in between.
I own a 2011 Suburban with 205,000 miles. It uses a quart of oil every two weeks, and i have to change the #6 spark plug once a month on average because it starts misfiring .I will continue to nurse it along as long as i can, but i hate the AFM with a passion! My old 94 and 99 Suburbans had far better engines because they only leaked oil lol. In contrast, i also own a 2003 Toyota Sequoia with 208,000 miles. It DOES NOT burn or leak any oil between scheduled changes, and never fouls any plugs. If Toyota made a vehicle as big as a Suburban , i would never buy another Suburban. Just sayin GM……
Turn off the afm
Lots of dod delete kits out there
Have you tried the Range technology afm delete module?
I own a 2013 Silverado with the infamous AFM system in place. This is everyones least favorite Silverado truck, which is probably why I like it. I bought it 2 years ago as one owner low mileage truck. The old man just didn't drive it too much. I currently have 91,600 on it. I have had to replace the cylender 1 spark plug. I'm burning 2 quarts per 5,000 miles, my exhaust pipe has black soot at the end, so I think I know what I'm about to be in for. Considering it's in great shape, and is a rust free truck (I live in the south) I think the engine rebuild will be totally worth it, and once said rebuild is done, it should be extremely reliable. Until then, I'm checking my oil level every 2 days, and even though it's burning it, I'm doing oil changes every 5,000 miles as I don't want a lifter to collapse from dirty oil.
That explains it..
My 2014 Buick LaCrosse.. burning oil like a rich crackhead…never again