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Do all newer sierras have AFM? - GMC Truck Forum Looking into getting a 15 or newer GMC Sierra with a 5 3 I’ve heard that not all of them have AFM mode which is how I would prefer it Wondering if this is true or if they all have it Any recommendations on what to stay away from and what to look for would be appreciated Thanks!
DOD delete and NOW PROBLEMS ! | GMC Truck Forum Recently had my 07 Avalanche with 190K miles did the stuck lifter thing Decided to go ahead and put a reman engine with Gen III lifters, camshaft etc, so it's DOD deleted, along with ECM programming the DOD AFM delete by AMS racing The engine seems to run and sound perfectly- but one BIG
Disable AFM without Tuning - GMC Truck Forum Hey guys: I was asked by one of your members to come on here because there has been some chatter about wanting to turn off Active Fuel Management We have developed a product to do it I fully intend to become a sponsor here - but in the meantime, if you have any questions, please see the
Chevys 5. 3l engine pron to failed lifters | GMC Truck Forum Anyone contemplating a 2007 or newer Chevrolet with the 5 3l V8 needs to Google any forums relating to their AFM "active fuel management" system You will learn immediately of serious and very costly engine problems MANY stories on the web are typical of my own experience I purchased a new
Lifter recall on 2007+ GM with active fuel management? I heard from my brother who is on a lot of GM forums that there is a recall on the lifters on GM vehicles 07 and later with active fuel management It's stated that it's for the ticking noise when running right after being started Since day one my truck has done this and I have always thought
Bully dog GT tuner question - GMC Truck Forum I was told a few days ago that the GT tuner from Bully dog has a feature on there to disable the active fuel management and makes the truck run on all 8's rather than switching from 4 to 8 cylinders Is it within the tune you program or is it on another page on the programmer itself? I have not
ISSUES AFTER AFM DOD DELETE 2012 LTZ - GMC Truck Forum What cam did you get for the AFM DOD delete? P219A B is Fuel trim imbalance, and P0300 is Random miss I’d say bad Tune on the truck But my 08 Z71 LTZ crew cab was only like 13-14mpg before delete on 33s With delete, straight Hog ass cam, headers, gears, etc, it’s 11 9mpg average now
No compression in non AFM cylinders - GMC Truck Forum I have a 2007 Silverado with 5 3 engine (LC9) and I have great compression in cylinders 1, 4, 6 and 7 (These are the AFM cylinders) I have NO compression in cylinders 2, 3, 5 and 8 Anyone seen this issue before? I'm stuck
2008 Silverado 5. 3 burning oil (none on the stick) - GMC Truck Forum My buddy went to change his oil yesterday because of a weird noise and there was no oil on the stick Said maybe 2 5 quarts came out of the pan It doesn't leak anywhere so it must be burning it It has the DOD I thought I read somewhere about a TSB on these burning oil or some fixes for it