2019 Silverado 5.3 valve question

[Randy Oreilly]

Hi guys,

 

got some questions:

I think I’m starting to have issues with afm system. How long can it go? Am I playing Russian roulette? 
 

details:

2019 Silverado custom, 5.3

103000 miles.

 

started having tick around 45000 (of course after warranty) 

I would get valve train clatter occasionally around 2200-2800 rpm not to often (mild acceleration not hard)

last trip I did was with small trailer (5k and towing mode on)  and with cruise control the valves would start clattering every 15 min. I would turn off cruise control and let the clattering stop and resume speed.

 

now it’s happening a lot now every time I’m on hwy with cruise control. 
 

would afm disabler help now? Or is it too late and should be looking for the afm delete. 
 

is there a way to very one of the valves is bad? 
 

 

thank you,

 

randy

[Gangly]

14 hours ago, Randy Oreilly said:

Hi guys,

 

got some questions:

I think I’m starting to have issues with afm system. How long can it go? Am I playing Russian roulette? 
 

details:

2019 Silverado custom, 5.3

103000 miles.

 

started having tick around 45000 (of course after warranty) 

I would get valve train clatter occasionally around 2200-2800 rpm not to often (mild acceleration not hard)

last trip I did was with small trailer (5k and towing mode on)  and with cruise control the valves would start clattering every 15 min. I would turn off cruise control and let the clattering stop and resume speed.

 

now it’s happening a lot now every time I’m on hwy with cruise control. 
 

would afm disabler help now? Or is it too late and should be looking for the afm delete. 
 

is there a way to very one of the valves is bad? 
 

 

thank you,

 

randy

Edited.

Edited August 8, 2022 by Gangly

[Randy Oreilly]

Update: 6 speed transmission blew before engine. will consider chip the. Full afm delete after transmission issue 

 

For others info:

mileage 105000, light towing, mostly hwy mileage. Transmission fluid changed 45k at dealer. Was about to change again and found a lot of metal.

Edited September 6, 2022 by Randy Oreilly

[Samthebam]

What is your build date, and does it have the max trailering package?