6.2 and 5.3 owners without issues

[ScathaTheWorm]

Gentlemen, please let me know the MOST AMOUNT OF  miles you have on your 2025-2026 6.2s and 5.3s. 

I know they are new, but please let me know. 

[Bikerjon]

On 10/18/2025 at 8:23 AM, ScathaTheWorm said:

Gentlemen, please let me know the MOST AMOUNT OF  miles you have on your 2025-2026 6.2s and 5.3s. 

I know they are new, but please let me know. 

4000 miles. 6.2. No problems. (Using Range Technologies DFM Disabler since new).

[SIXFOUR]

 

On 10/20/2025 at 11:22 AM, Bikerjon said:

4000 miles. 6.2. No problems. (Using Range Technologies DFM Disabler since new).

What about a 2020 6.2L no issues.  81078mi.

Only run 93•  

[ScathaTheWorm]

Alright good. 

 

[PunchT37]

Mine has 7800 miles. No problems. 2025, L84.

 

Brother has a 2024, L84, with 40,800 miles. Runs like a clock.

[ScathaTheWorm]

11 minutes ago, PunchT37 said:

Mine has 7800 miles. No problems. 2025, L84.

 

Brother has a 2024, L84, with 40,800 miles. Runs like a clock.

Good to hear. 

[ScathaTheWorm]

I wouldn't be surprised if some people have 200k to 300k as well. Hotshotters don't have time to be on the Internet. 

But yes, I need to verify this IN REAL LIFE too.

[JohnMr19]

We have a 2025 Tahoe High Country (6.2) with just over 1,600 miles.  So far zero issues.

Edited November 22, 2025 by JohnMr19
Add info

[Gary Mounts]

2025 Sierra SLT 6.2 L87 1586 miles so far so good.  Changed oil at 1000 miles and only use 93 octane.

[Steelhead1968]

Have a 2024 Silverado LT with the 5.3 and it has 29,275 miles on it.  Have had no issues so far and runs great.  Regular oil changes from the Dealership at 5k or less with AC Delco 0W20.  Will be switching to 5W30 soon because the research I have done shows user thicker oil if you want to keep you truck a long time.  Have done multiple oil changes with 0W20 and have seen first hand the oil is just too thin when I have drained it.