Question about the GMC 5.3 with AFM

I’m killing all of them

 

Duramax revenge

 

I heard my bosses 5.3 in his GMC start up. It had a distinct ticking noise on startup, it went away after a few servings, then when he put it in drive, to take off, it made the ticking noise again and continued to as long as I could hear it.

Pretty sure what that noise is. He's got to have 150k + miles on it

 

Well past expected lifespan anyways...

 

Most do the eat a lifter and send metal through the block by 80-100000. If this doesn’t do it the in pan oil pump coming apart and giving it the 1-2 punch of no oil and metal shavings probably will

 

Is there anything that can be done to prevent this? Our suburban is at a little over 100,000 iirc.

 

Friends don't let friends drive chebbys...

 

Just saying
Ford recalls more than 850,000 vehicles, including the F-150 and Bronco
Bow tie till I die

 

You can buy a programmer to plug in and it will turn off the cylinder deactivation but at 100,000 miles depending how often you change oil and what oil you use damage may already be done.

 

Your choice, fuel pump that could quit like any can or one of 720,000 gm 6.2 gas v-8’s that are a ticking time bomb just waiting to be replaced when they can make them. The Mexican built 5.3 in the Mexican built 1500 is pretty known to fail also there’s a reason Chevy put 800 million dollars into developing a new v-8 and tooling up for it have to see if it’s any better. They all have issues but major engine issues isn’t as great with ford at the moment and the transmission is nearly identical between ford and Chevy. Ford designed the rear drive 10 speeds and gm made the transverse 9 speed that ford programmed out one gear on making it and 8 speed. Think gm has since done the same, looks like both my vehicles are getting a new fuel pump. Oh and I’ve had both gm and ford but both have issues just pick what one you want.

 

You know GMC is an acronym. It ain’t General Motors company…

 

Oh I know it...but I'm trying not to stir the hornets nest, too hard!

 

Recently a guy was telling me about his new GMC ATwhatever, he went on and on. When he was done I told him I had never heard of it, is it a new hybrid or something ? I wish I had a camera to take a pic of his face.

 

My dad recently bought a GMC Acadia. I told him he got a gay man's Chevy. He didn't laugh.

 

Did you ask for his man card?

 

I believe that was addressed several years ago with different ring designs and programming changes so it only runs on 3 cylinders for a maximum of 90 seconds at a time. There are probably some other changes im forgetting. The biggest issue was the cylinders dropping below optimal operating temperatures coupled with the lack of cylinders pressure to help seal the rings. This allowed blow by on the dead cylinders and oil getting up into the combustion chamber. Once all 6 fired up, it burned the oil and over time it ended up sticking rings which compounded the oil burning and actually damaged cylinders in some cases. I read up on it when researching our truck for 3 years before buying one and I'm still active on the Honda forums. It doesn't appear to be a problem anymore and hasn't been for quite some time. However, I'm still going to deactivate it with a plug in device at some point as Its easier on the active motor mounts they use to address vibrations when on 3 cylinders. Why chance needed those replaced.

 

I should have! He went from a 14 f250 work truck to that. I'll have to keep it in mind for next time.

I'm his defense he's had multiple back surgeries.

 

Yep. I had a ford ranger that was an oil burner from new. Not terrible but enough to be irritating. Back then Ford was putting a low oil sensor that alerted you when you were 1/2 a qt down if I recall. Maybe it was a qt. It was one from the early low tension ring days.

I had a Toyota built Pontiac vibe that was a first year model. They had cold engine clatter and oil burning issues that would usually start around 100,000 +/-. It wasn't just the vibe. It was all 1.8 liter Toyota engines for about a 2 or 3 years span before they changed the piston design.

As my wife recently said, they all are problematic in one way or another. Might as well buy what you like and hope for the best. Unfortunately, she's pretty spot on.