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GM V8 Engines Experiencing Valve Lifter Issues – GM Authority
https://gmauthority.com/blog/2021/07/gm-experiencing-an-increasing-amount-of-v8-engine-valve-lifter-issues/
To note, the naturally aspirated 5.3L V8 L84 is rated at 355 horsepower at 5,600 rpm and 383 pound-feet of torque at 4,100 rpm, while the …
How GM Dealers Handle Engine Valve Lifter Issues
https://gmauthority.com/blog/2021/08/how-gm-dealers-handle-engine-valve-lifter-issues/
If the vehicle has more than 8,000 miles, only one bank of lifters will be replaced. 5.3L L84 V8 engine. If the customer has experienced prior …
GM lifter issue! | Mikey's Board
https://mikeysboard.com/threads/gm-lifter-issue.293878/
After buying lots of GM vans over the years and having very few problems, it seems they …
Service Bulletin TECHNICAL – NHTSA
https://static.nhtsa.gov/odi/tsbs/2019/MC-10158866-9999.pdf
2014 GMC Sierra 1500. 2015-2018 GMC Sierra. 2015-2019 GMC Yukon, Yukon XL. 2019 GMC Sierra Limited. Equipped with 5.3L Engine (RPO L83) or …
Unlocking lifter…..VLOM problem? – GM-Trucks.com
https://www.gm-trucks.com/forums/topic/195711-unlocking-liftervlom-problem/
More results from www.gm-trucks.com
How do I know if my AFM lifter is bad? – FindAnyAnswer.com
https://findanyanswer.com/how-do-i-know-if-my-afm-lifter-is-bad
The most obvious symptom of a faulty hydraulic lifter is the noise it creates in your car’s engine. You can usually distinguish the faulty …
Tech Bulletin on JB-7011 lifters for GM LS engines with AFM
https://www.melling.com/wp-content/uploads/2018/03/Melling-tech-bulletin-on-GM-LS-Deactivation-Lifter-Issues-3.1.18-1.pdf
We have found that most lifter faults are caused by oil pressure issues, or control issues. The AFM activation and deactivation is controlled by the Valve …
The 1 Big Problem People Are Having With the Chevy Silverado
https://www.motorbiscuit.com/the-1-big-problem-people-are-having-with-the-chevy-silverado/
Many drivers praise General Motors for rolling out some of the best trucks … replacing worn parts, including the AFM active valve lifters.
Low Oil Pressure Message: Locating the Mystery Filter – NOLN
https://www.noln.net/articles/2223-low-oil-pressure-message-locating-the-mystery-filter
GM states that some customers may complain of a low oil pressure message on … With sludge forming on the AFM valve lifter filter screen, …
How to Delete or Disable Active Fuel Management (AFM)
https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-engines/
AFM lifters have a history of failing and oil consumption can be a problem. How to Delete or Disable AFM on GM/Chevy Engines. There are two ways …
SilveradoSierra.com • Lifter failure : EcoTec3 5.3L V8
https://www.silveradosierra.com/ecotec3-5-3l-v8/lifter-failure-t740719.html
Has anyone had any level of success getting Mother GM to cover their … lifters are NOT from lack of proper maintenance or hard driving.
SilveradoSierra.com • Dropped a lifter? : EcoTec3 6.2L V8
https://www.silveradosierra.com/ecotec3-6-2l-v8/dropped-a-lifter-t738079.html
It’s a known problem on T1 6.2 DFM motors. It hasn’t been reported much on this site but has …