maybe bad ignition timing?
You have worn cam lobes on a truck with only 100k miles? What is this, the 1980s? I thought everyone was using roller lifters/followers!
I don’t know much about the silverado, but since you are calling them lifters, I am guessing this isn’t an over head cam engine. So if you have an overhead valve engine, you are going to strip the engine down to the timing chain. Or did you mean followers?
Either way, I don’t understand why you would need a new cam shaft already
What engine does it have?
Sounds similar to my 2014 Silverado, at about 40k miles the intake manifold bolts were breaking causing air leaks that sounded like ticking. Was worse when it was cold. I took it to my local mechanic who replaced the bolts and it’s been fine ever since. Back then he said it was a known issue by GM so not sure if they fixed it or not, just thought I would chime in, in case it might help.
I would do it as soon as you can but I’ve heard one that sounded like the A/C compressor was eating itself from >100’ away. I went over and the guy said it was just the lifters and he was fixing to get around to getting it repaired.
I know the earlier model LS engines were prone to the exhaust manifold bolts breaking which gives tick sound. There are kits from Dorman to repair it.
Having a little engine noise, and planning major engine work deviating from OEM specs to solve it?
One would suggest that you reconsider.
Take it to a reputable independent GM/Chevrolet engine mechanic for a look. He ought to be able to give you practical professional advice.
What brand oil and weight are you using and how often are you changing it?
Rent a Hertz EV until you get the work completed.
Just don’t park the rental in your garage overnight.
If it’s the 5.2 or 6.1, lifter failure is a kmown issue.
The AFM/DFM - which I turned off on my 6.2 - has nothing to do with it.
Did you check out any of the CHEVY forums or Google/YouTube? You might not find the complete answer but like some of the comments here, it may give you other things to check before you tear the top off your engine.
Newer Rislone you add to crankcase and just drive the car normal. A couple hundred miles, then change out.
“I know the silverado has a lifter issue with the AFM (Active Fuel Management) system so I’m getting concerned”
I wouldn’t obsess over that if I were you....it’s not that ‘till it is.
Having it diagnosed by a trusted shop would be my 1st move......in the mean time, if your that concerned it might meltdown, by all means find an alternative mode of transportation.
When I had the transmission rebuilt on my 2015… I had the AFM turned off (HP Tuners). Because the AFM lifters were still in the motor…one finally collapsed and bent a pushrod.
Ended up having a new cam and lifters (non AFM) installed and the mechanic did a full internal AFM delete. Cost me less than $3,000.
If you drive it in M4 instead of auto it will disable the afm which is what I would do. Also when you do the cxam swap you’ll have to program the afm out of it. You can buy the programmer now and disable it that way for now.
Maybe the freeper ‘Nervous Tick’ has some advice. And maybe not. Lol
I wouldn’t think it to be ignition timing, or it would likely run rough at idle.
These complex engine systems, designed to get another 5-10 mpg, seem to cost more than the old tbi engines when combining repairs and fuel expenses.
2 1/2 hours commute each way? Yow! Get a 379 Pete and make some money with your commute. A logistics broker can find you loads on your route. Lol
First, please explain why you’re making a 2 1/2 hour commute in a full size pickup?
Why not keep the truck at the job site. Get a Civic beater with a heater for the commute.
Linked below is an article on disabling active Fuel Management in your truck. The device simply plugs into the diagnostic port in front of your left knee while in the driving position. It’s moderately expensive, around 200 bucks.
If your truck is not too badly damaged, it may prevent a future failure. If it stops the noise you now hear, it may do that. Unfortunately, you likely have to buy one to find out, and you need it right away.
You’re asking engine specific question on a political discussion site when there are make and model specific forums on the internet? Sounds like something a Chevy owner would do. SMDH…
If you want to buy a new gas GM truck then move closer to work ...just my experience. After 100K miles they run down. If it doesn’t happen one way then it happens another way.
Yes, there are lots of exceptions. It’s a trend, not an absolute.