Question about the GMC 5.3 with AFM

You just had to go and say something..... good luck this week.

 

I bought the extended warranty too.

 

111,171 on our 2020 Tahoe with zero issues, even with 10K oil changes. Even started out as a rental in 2020 for 23K miles being abused. Sometimes the internet is the devil…

 

My BIL had lifter trouble out of his Tahoe
Can't remember what year. It was repaired under warranty.

 

Sometimes? If you watch YT, it seems that every gas and diesel engine will explode at any minute unless you get $20k in upgrades. A month ago I bought a diesel truck, so naturally I watched 10,000 videos on everything wrong with diesel’s. I was like omg why are all these people buying diesel when they have 50,000 failure points.

 

I just meant if you talk about how good things are they usually let ya down.

 

Guy I work with is a mechanic on the side and has done tons of the afm engines its truly not just an internet thing just like the first gen 3.5 ecoboost timing set and phasers or the hemi taking the cam out. They all have issues and oil changes at 4-5000 help put off the issues a lot but not sure if that’s even a guaranteed fix. It just is a by product of economy, variable rate oil pumps, cylinder shut down, vvt and direct injection along with 10 speed transmissions.

 

Smart man.

 

Lots of tech thrown at a pushrod engine.

Yes, starting in 2014 5.3's had AFM and DI available.

 

This unfortunately will just add to the chance of issues unless it’s dual stage injection with port and di. Di engines carbon up the valves so ford went di and port on the 2nd generation ecoboost v-6’s like my 2.7. Not to mention the fuel dilution that affects lots of di engines. Another reason I don’t go over 5000 depending on what I’m doing for oil changes.

 

GM full size trucks outsold F s in 24. Somebody better tell folks about this. The super of the motor pool at my work just bought himself a ZR2 with AFM and 2 1500’s for the fleet. I’m not saying it doesn’t ever have issues. There’s still a bunch of cp4 pumps on the road. My 10 speed has already been flashed and may blow up tomorrow. My point is fear get clicks, comments and thumbs up. Nobody wants to watch a video of an old guy driving his 2014 OE 3500HD with 275,000 pulling a camper.
I’m going to break the bad news to Matt tomorrow about his shiny new ZR2 being a ticking time bomb.

 

My 2018 Sierra was the first year of 8 speed. I read horror stories of the transmission shudder known as the chevy shake. Saw it on the news too. Mine started doing it just out of the factory warranty. It was a known issue that they used the wrong spec fluid at the factory. They did a 21qt transmission flush and refill with the correct fluid for $750. There were lawsuits over it but GM says fluid changes are part of regular maintenance and won't pay a dime on it unless it's still in warranty. I was very pizzed about it but had no choice but to have it done. I didn’t have time to check other places because we were leaving on a 10 hour trip 2 days after it happened.

 

Never said it didn’t outsell the f-150 combined gmc and Chevy has more than once over the years. Ford separates them because technically they are independent brands but mostly the same. The 10 speed ford design transmission is having valve body issues in gm and the cdf drum sliding in ford but they all have issues.

 

Exactly. DI will do that. Ford was smart to have port and DI on some. My employee was wanting an F-150 since he first started working with me nearly 5 years ago when he was an intern in his last year of college. I he's always liked mine. Well, he just bought one, and I taught him right. He found a pretty loaded XLT fx4 supercrew '21 5.0 in Columbus Ohio, with under 40k for a good deal.

 

I'm not impressed with the zr2. A coworker had one when they first came out. He traded it in on a 2500.It was loud and that was about it. It didn't do anything better than my 16 5.0. maybe it would've been a little better off road, but it wasn't quicker, and couldn't tow as much.

Sure, most people know that there's a few years that when you add up gmc Sierra and Chevy Silverado sales that they did sell more than Ford F series, but again, there's not enough to move the needle for a lot of folks.

For me, the bad 8 and 6 speeds were way past me wanting to have anything to do with a GM truck. They crapped that bed by the 90's.

But yes, fear gets clicks, when there's enough smoke that is actually leading to flames, then that's when I'm out.

 

7500.00 my friend just paid and that was a reduced price after the cam and lifters fried in his 5.3
Only 33k on it

 

That’s another bs thing, 3 years 36000 ect just because average miles per year used to be 12000 why the time limit other than to hose people. If it was 4-5 years and 33,000 who cares they should fix them not the owners fault they uses a truck less than average. My 2021 f-150 2.7 is at 61000 the only thing that really worries me much is the oil pump belt that the 5.0 also has. Mine was one of the years with the bad valves that snapped off because of getting to hot while being machined. Supposedly if they were going to go it would be buy 20-30000 but who knows.

 

I agreed with the warranty thing. My 2018 only has 34,000 miles. It was well under the 36k when the trans thing happened but we'll over the 36 months.

 

The oil pump on the 5.0 is driven by the timing chain on the 2020 and older ones. Yet another reason I went with what I did, granted, when I was buying my truck, Ford was having a few issues with the new dual injection system on the 5.0, and one I looked at was actually a buyback.

 

Those years had the issue with the plasma lined cylinders on occasion also I think but they straightened that out too. All them have issues and I’m not as concerned that it has a belt drive but it’s behind the timing chain set so lots of time to change at 100-150000 depending what you read. They all do it Chevy put a belt in back of the diesel 1500 and the transmission needs to be pulled to change it.