spikesputnik

Grumpy got it!

Thanks for the thorough recap, Grumpy. What I didn’t know was that metallurgy related failure would be unlikely at this juncture, though it kinda makes sense. I’ll be sampling for a UOA before running in for a bit my occasional pre-change 1/2 quart MM oil- another part of my routine. I know the MM may be controversial or snake oil, but I like the smell! My thinking is it may get goo and boogers in solution to be filtered out and dumped. Well, probably not goo and boogers, but I have no idea what be accumulating there on the inside.

True that. It took me around 4 months to get my ordered truck. Yea, I’ll probably just keep an ear on it for now.

LOL I have lots of space, but not that much bravery or skills- dirt bike top ends is about as far as I’d go! But I do have a shade tree type guys with the skills.

Gotcha, thanks.

Well, it was deleted 95k miles ago… But the percentage is encouraging.

Haven been here much in recent years but I still have my 09, though it’s been relegated to farm/beater so to speak. But still a valuable member of the family and just rolled over to 100k miles. At less than 5 k miles I had Blackbear delete AFM and do a very mild tune, as well as to the tranny ECU. I’ve been very good about oil/filter changes at around 50% on the OLM. A few oil analysis came back fine every time. May have used 1/2 qt last change. No engine or trans problems despite pulling 4000# boat at highway to freeway speeds for 10-15k miles over a few years I’d guess. Got a dedicated better puller in 2018 and 2022 ….from the dark side Anyways, so I’m jump back on here and refresh myself with the goings on with these trucks and see a lot of talk about lifter failures…. Question on consensus- is it just a matter of time till my lifters fail? Anyone take a guess as to a percentage of these 5.3 AFM that will despite short interval high quality oil changes? As I understand it, neglect could make it more likely with clogged screens and low pressures. But it also seems there is a degree of randomness (suboptimal lifter design) to the problem? I’ve heard of crazy expensive repairs, and replacing the lifters prophylactically might not make financial sense. I’d like to keep this truck for hauling stuff as well as hauling the dog, but don’t necessarily want to hang onto a grenade.

True, but it had to be there for airbag recall, so figured just let them.

Turns out it was a wheel speed sensor failure. $475 repair

Thanks CamGTP, that’s a relief. I’d heard of bad problems after reactivating the AFM after years of inactivation.

Last month I spun the tires a little pulling into traffic, and the traction control and ABS lights come on in the dash. I tried to reset it by disconnecting the battery to no avail. Everything runs and sounds fine otherwise for a truck with 100K on it. So now its at the dealer to look into it, as well as replace the airbag, finally. 09 Silverado 5.3 2WD fwiw Question- does traction control function have anything to do with the TCM? Or ECM? The reason I ask is when the truck was nearly new I had the AFM programmed out of it and a tune done on the TCM and don't want to loose those tunes! Are they likely to want or need to mess with those modules? Thanks