If you own a GM with a 6.2 you might want to watch this

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dishstaller

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Oct 1, 2003
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This is NOT a bash on GM. However, if you have one of these engines you need to know this info. Looks like you are covered if the engine fails. GM might be looking at a recall of 1 million motors. Many don't experience any issue but if you do...the dang engine seizes up. That could ruin a vacation real fast.

While they are at it, they should make Ford recall/extend warranty on their piece of crap 10 speed transmission.


View: https://www.youtube.com/watch?v=NS67r6wV0Kg
 
This is NOT a bash on GM.
It kind of is, but they brought it on themselves in trying to avoid a "stop-sale" on their most popular models. Honda tried something similar on the 2025 Accord but ultimately failed and suffered a stop-sale when I was sedan shopping in late 2024.

Not only does it appear that GM hasn't fixed the problem going forward (with so many crate engines failing), but they are trying to gloss it over with an oil viscosity change that hasn't addressed the issue.

GM needs to stop selling the 6.2 units, figure out what the problem is, and replace all of those engines with engines that they are certain aren't going to fail. As it is, even the latest production units seem to be subject to locking up with as little as under 2,500 miles. That the current rate is 8% is pretty high odds while so many units are still relatively low miles.

As the video notes, the GM 5.3L seems just fine. To GM's credit, they don't seem to be offering cash-back promotions on the 6.2L models and are pushing the turbo and diesel models instead.

Ram probably needs to consider something drastic with the Hurricane (a name borrowed from Jeep) 6 cylinder engines.

Oddly, Toyota was replacing all of its big truck engines that may have metal turnings in the crank case but they seem to have decided that they like GM's path better and they're being selective about which engines get replaced by checking the clearance on a particular crank bearing. These kinds of fixes seem likely to miss those who don't put a lot of hard miles on their trucks until they are out of warranty.
 

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