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Any problems with 5.3 AFE in Tahoe/Suburban? #5402559 04/13/20 11:59 PM
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PotatoFarmer77w Offline OP
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I'm looking to get the last generation Tahoe, 2010-13 year range. We all know the 5.3 w/AFE in Silverados/Sierras in the same era were having problems, but I haven't heard a lot of problems with Tahoes/subs. Aren't they sharing the same engine? Maybe people who drive Tahoes/subs always keep up with oil changes? hide


I'll be using this Tahoe as a part-time daily and tow a 4500lb travel trailer. I was originally looking at the Silverado with the 4.8 (no AFE) but Tahoe will fit into my garage nicely. Should I stick with the 4.8?


1995 Chevrolet K1500 5.7 v8
2007 Ford Ranger 2.3 I4
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5402574 04/14/20 12:42 AM
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clinebarger Offline
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They share the same engines for the most part, All the 5.3L engines put in GMT900 trucks/SUV's have AFM (LMG, LC9, & LY5)

2009 was the last year for the 4.8L (LY2) & 4L60E in a Tahoe.

AFM issues seem to be luck of the draw & wouldn't say one engine or platform is more or less susceptible than the other.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5402608 04/14/20 04:12 AM
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GMguy84 Offline
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I have a 07 suburban with the 5.3 with the AFM. Right after I bought it, I got this device that plugs into OBD port and tricks ECM to keep it on 8cyl mode. After several months its been working fine NO issues, Its NOT a 100% fix but sure helps thumbsup

https://www.amazon.com/Range-Technology-Active-Management-Disable


Also There is a complete disable kit for these engines but its $$$$$$$$$$$$ parts and labor

[Linked Image]


Dave


01 Silverado 1500HD Shell RGT 5W30/XG3675

07 Suburban 1500 Mobil Super Syn 10W30/XG10060

82 Trans Am (KITT) M1 10W40HM/XG5
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5402609 04/14/20 04:18 AM
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va2001ss Offline
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No problems with mine. I have 60k on my 2013 Tahoe with the 5.3 LMG. I have followed a 5k OCI.


2018 Chevrolet Malibu 2.0T LTG
2013 Chevrolet Tahoe 5.3 LMG
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5402621 04/14/20 05:16 AM
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Snagglefoot Offline
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If you want more assurance that the AFM will work properly buy a 2014 up model. They changed the system and apparently it’s more reliable. From what I recall they went to a higher oil pressure, (70 psi vs 40 psi), made the oil pressure variable using an electronic controller, the lifter system was redesigned, they asked for 0w20 oil, and reduced to OLM from 10,000 miles to 7,000 miles. The oil choice and change interval is up to you. smile


If you want the job done right......do it yourself.
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5402701 04/14/20 07:46 AM
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Railrust Offline
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It's hit or miss, you'll either have lifter failure or you won't. Some people claim lack of maintenance, some don't. It's really hard to tell.


2018 Chevy Silverado 5.3
2007 Lexus LS460 (deceased)
2008 Honda CRV
(Whatever synthetic oil is on sale or rebate)
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5403260 04/14/20 05:54 PM
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01rangerxl Offline
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GM sells hundreds of thousands more Silverados/Sierras than Tahoes/Suburbans/Yukons, so you're going to see a larger number of pickups with the problem than SUVs.


2002 Ford Ranger XLT | 3.0 V6 Auto 2WD | 239K miles
1994 Ford Ranger STX | 4.0 V6 Manual 4X4 | 203K miles
1994 Ford Explorer XLT | 4.0 V6 Auto 4X4 | 256K miles
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: Snagglefoot] #5403276 04/14/20 06:33 PM
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CKN Online Content
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Originally Posted by Snagglefoot
If you want more assurance that the AFM will work properly buy a 2014 up model. They changed the system and apparently it’s more reliable. From what I recall they went to a higher oil pressure, (70 psi vs 40 psi), made the oil pressure variable using an electronic controller, the lifter system was redesigned, they asked for 0w20 oil, and reduced to OLM from 10,000 miles to 7,000 miles. The oil choice and change interval is up to you. smile



Actually it was fixed towards the end of the 2011 model year. That's when they put in the new valve covers. I had a 2011, 2012, and 2018 w/the 5.3.

Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: CKN] #5403304 04/14/20 07:29 PM
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Snagglefoot Offline
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Originally Posted by CKN
Originally Posted by Snagglefoot
If you want more assurance that the AFM will work properly buy a 2014 up model. They changed the system and apparently it’s more reliable. From what I recall they went to a higher oil pressure, (70 psi vs 40 psi), made the oil pressure variable using an electronic controller, the lifter system was redesigned, they asked for 0w20 oil, and reduced to OLM from 10,000 miles to 7,000 miles. The oil choice and change interval is up to you. smile



Actually it was fixed towards the end of the 2011 model year. That's when they put in the new valve covers. I had a 2011, 2012, and 2018 w/the 5.3.


This an important issue. Do you have any backup?


If you want the job done right......do it yourself.
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5403306 04/14/20 07:33 PM
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ls1mike Online Content
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My understanding it was OCT of 2014 that the updates were made. My Caprice had them built at the end of OCT 2014.
I don't think I have seen an AFM/DOD failure on a 14 and up Caprice, but I have seen it on 11 to 13 Some go 150,000 miles and 10,000 idle hours without issue
some do not.


Mike
00 Trans Am WS6 5.7 LS1
17 Silverado 3500HD 6.0
14 Caprice PPV 6.0
15 Malibu LTZ Turbo
12 Passport TT
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: Snagglefoot] #5403369 04/14/20 08:46 PM
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clinebarger Offline
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Originally Posted by Snagglefoot
Originally Posted by CKN
Originally Posted by Snagglefoot
If you want more assurance that the AFM will work properly buy a 2014 up model. They changed the system and apparently it’s more reliable. From what I recall they went to a higher oil pressure, (70 psi vs 40 psi), made the oil pressure variable using an electronic controller, the lifter system was redesigned, they asked for 0w20 oil, and reduced to OLM from 10,000 miles to 7,000 miles. The oil choice and change interval is up to you. smile



Actually it was fixed towards the end of the 2011 model year. That's when they put in the new valve covers. I had a 2011, 2012, and 2018 w/the 5.3.


This an important issue. Do you have any backup?


The Valve Cover & AFM Relief Valve Shield was to address oil consumption. AFM lifter locking pin issues still happened on some engines.

Locking pin issues are now cropping up on Gen V engines, I thought they had it fixed also 'til some '14/'15 models started racking up mileage. I really don't think this technology can be 100% perfected, Just like VVT/VCT Phasers......Have a small pin mechanically lock & unlock a few 100,000 times & something is bound to wear.


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5404420 04/15/20 08:23 PM
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donnyj08 Offline
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I have a 2008 Silverado LY5 5.3L with AFM. I have 101k on it with 0 issues. Have owned it since 23k miles and it has burned about 1/2qt of Synthetic every 5k miles the entire time I have owned it.

The amount of AFM issues on GM trucks is far less common than the Phaser/Timing chain issues on for 5.4L engines of the same era.

I wouldn’t hesitate to buy another AFM LS powered GM truck or SUV.


2008 Silverado LT Z71 101k PP 10w30
2016 Tucson Limited 1.6T AWD 35k M1 5w30 AP
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: donnyj08] #5404438 04/15/20 08:41 PM
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4WD Offline
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Good to know … both of mine are pretty young at 33k/20k and are seamless with the AFM

Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: 4WD] #5405002 04/16/20 12:04 PM
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Tahoe4Life Online Content
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Originally Posted by 4WD
Good to know … both of mine are pretty young at 33k/20k and are seamless with the AFM


I just turned 83K miles on my 2016 today. AFM is still working seamless.


2016 Chevrolet Tahoe LT
Mobil 1 0w20 AFE or EP
AC Delco Filters
Re: Any problems with 5.3 AFE in Tahoe/Suburban? [Re: PotatoFarmer77w] #5405385 04/16/20 06:49 PM
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Jake_J Offline
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The AFM system in all the GMT900 based trucks and SUV's with Gen. IV LS based 4.8L and 5.3L engines is problematic. It only happens on a small number of engines but can be a very expensive fix if it does happen. It's the biggest flaw with the engines that are overall very reliable especially when viewed against comparable engines of the time like Ford's problematic 4.6L and 5.4L Modular V8's. GM's Active Fuel Management system problems aren't unique as Chrysler's similar Multi-Displacement System (MDS) is also quite problematic as well.

I think the GMT900 era Silverado's and Tahoe's are a big improvement over the previous GMT800 vehicles and most are at a great point on the depreciation curve but given the spotty reliability I'd suggest buying the newest and best cared for example you can.

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