6.2L Engine replacement

[ZR2 silverado]

Great Job/I did the Same no confidence in the 6.2 engine even after it was replace /Dumped it and also got a new 2024 bison 3.0 ZR2 Happy so far 7200 miles

 

[BlvckOp]

Just saw this - https://gmauthority.com/blog/2025/04/gm-6-2l-v8-l87-engine-lawsuit-filed-in-illinois/

 

[KLA]

Just saw this - https://gmauthority.com/blog/2025/04/gm-6-2l-v8-l87-engine-lawsuit-filed-in-illinois/

Saw that a few days ago. Interested to see how that lawsuit pans out.

 

[jruck]

Trade it for what? ZR2 with a baby duramax?

Oh yea! I know I've only got 2,500 miles on mine but so far so good.

 

[Matt23]

Update on my 24: See attached for the two main pages on my repair order... They basically said the failure was top down - broken valve spring led to dropped valve led to piston scoring led to spun rod bearing. My hunch (based on known 6.2 issues) is the other way round - bottom up failure. They had the truck six weeks and change to fix it.

Got the truck back three days ago and coolant temps would max out after three minutes or so in operation (while oil temps remained fine). Took it back this morning. Diagnosis was air in the coolant system which was purged and refilled. Seemed OK on the 10 miles home - we'll see...

 

[AXE]

Update on my 24: See attached for the two main pages on my repair order... They basically said the failure was top down - broken valve spring led to dropped valve led to piston scoring led to spun rod bearing. My hunch (based on known 6.2 issues) is the other way round - bottom up failure. They had the truck six weeks and change to fix it.

Got the truck back three days ago and coolant temps would max out after three minutes or so in operation (while oil temps remained fine). Took it back this morning. Diagnosis was air in the coolant system which was purged and refilled. Seemed OK on the 10 miles home - we'll see...

View attachment 21815View attachment 21814

They can tear a motor a part, but can't burp a coolant system.......hmmm!

 

[KLA]

My 22 ZR2 with the 6.2L V8 was just at the dealer for about 5 days.

2 weeks ago on my way home I came to a stop at the end of an exit ramp and my truck almost stalled. Managed to keep it running and got it home with no problems. Went to start it the next morning and, to no surprise, it wouldn't start. Immediately I thought the worst. Thought I was having the same lifter problems that I had on my 2015 5.3L Silverado that needed the engine replaced. Next day I got it to start and, although it ran like shit, I got it to the dealer. Told them I needed a loaner, cause I assumed the motor was gonna need replaced and they were gonna have my truck for quite a long time. They told my I was out of luck and they didn't have a loaner for me. Well, I was already mad and at that moment I lost my shit and raised hell in the middle of the service department and insisted they rent a vehicle for me. The next day I got a call from our local Hertz Rental service rep and they delivered an almost new Chevy Equinox with only 1500 miles to my house.

Long story short, it ended up being a bad injector, not the lifters like I thought. My service advisor had 3 injectors replaced, under warranty, of course, and no cost to me for the service or the car rental.