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I know of 2 5.3L engines with AFM that run great. One now has 176,000 miles and the other has 235,000. Never opened up. Sound quiet. They have the same lifters with the pins as we do now. The 176,000 mile is my brother`s 2007 Avalanche and the other is a coworker`s 2010 Tahoe. I`m not going to say that these systems are as reliable as before cyl deac, cause they`re not. BUT, these engines came before the 0w20 "mandate". Hmm. Something to think about? Pins have better separation from the body and move better? Not all lifters that fail are deac lifters. Hmm. Rollers and needle bearings with better separation? Just thinking out loud. -
Had a 2011 - replaced the brake switch - that was the problem, for me. -
So, my 2021 only gets radio updates, right? If that's the case, my radio is doing just fine and probably better off without any updates, especially considering the problems I've been reading about after updates were performed. -
Hey guys, sorry for the confusison about this. This wasn't my experainnce, it was copied and pasted fom the net. -
The problem with failure rates or increase failures are there’s people who don’t have a problem. What are you doing wrong they say. We had 4 5.7 GM diesel’s in the family when they came out. One was flawless. My uncle who happened to be the most abusive. Early rotary engines were known to use oil. I abused my first car so bad in six months I replaced the clutch, transmission and rear end. It didn’t use oil. My brother in law has a 2013 Tahoe and an older Yukon. The Yukon has 280K miles. The Tahoe around 175K. He runs them to about 300K. If his lifters fail before that time he would consider it a failure. My Hondas, I know people hate it when I mention them. Identical engines. One with cylinder deactivation one doesn’t have it. One shudders when the eco light goes on or off. Cylinder deactivation. But wait! According to the web. It can happen with lock up too. So now people in the know are changing the oil and transmission fluid more often. Then you read it could be a programing issue. So what do you do? There’s lots of money involved. I see three ways to deal with it. One only works if you don’t drive lots of miles. Lease, never get out of warranty. Or only buy older vehicles with a good track record. They all have bad runs. Usually when there’s a change. Even Toyota and Honda.
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