Buying 6.2 engine vs 5.3

[blkonblk]

I have a 23 yukon denali duramax and love it. Look into that option as well

 

[nomech]

I didn't know the issue was only on the 6.2s I thought the 5.3s also had the same issues. Interesting. I don't know why I thought that.

 

[CrashTestDummy]

I didn't know the issue was only on the 6.2s I thought the 5.3s also had the same issues. Interesting. I don't know why I thought that.

Yes, both 6.2 AND 5.3 have the issues. And simply disabling the AFM (DFM as it's called these days) doesn't eliminate the problem, as the parts are still in the engine. It seems a fair number of 6.2's failing are spinning rod bearings/spitting rods out the engine, not just issues with the lifters/cam with the DFM system.

 

[RevolutionLeast87]

Everyone of you is telling what the issues are with 6.2 and 5.3 engines. But what I am looking for, is considering all the issues and information at hand. What is best one to buy?

My driving habits will be to use this new vehicle mostly for road trips with 2 toddlers. Not much of towing needs. Mostly city driving to work, which is located in downtown part of the city. Live in west coast state where gas prices are high.

Haven’t driven any truck like SUV in my entire life. Drove both 5.3 and 6.2 engines and really do liked the peppiness of 6.2

 

[JKeller]

I think you have answered your own question. You liked the peppiness, so get the 6.2. If you didn't care about the peppiness, get a 5.3. The 5.3 probably gets the nod in terms of lower percentage chance of issues, but both can have issues. I had a lifter eat into the cam shaft on my 2003 5.3. I had 2 other 5.3s that did not have any issues. My current 6.2 has 100k miles with lots of towing and no issues. Just go buy what you want.

 

[WalleyeMikeIII]

Just note, the 6.2 really should use premium fuel...so factor that into your budget (West Coast Premium Fuel is really premium priced).

I had 5.7L and 5.3L Suburbans and Tahoes before I got my 6.2L in 2022. I will never go back to the 5.3L. It is not a bad engine, but the 6.2L has way bigger smile factor.

If I were in your warm climate, and if you have regular drives of 20-30 mintues or more, I would strongly consider the 3.0L Diesel...

 

[RevolutionLeast87]

I really have to drive far to find diesel, so that's what’s stopping me from buying a diesel engine. The Costco near me doesn’t even sell diesel.