Dreaded 6.2 Lifter Issue

Hello,

1st post here. I have a 2017 GMC Yukon Denali XL. Right during covid, lucky me, we had the lifter issue on the vehicle. GMC covered the cost and replaced all the lifters. It took about 2 months, but they got it done. We have taken multiple cross country trips with no issue and the vehicle ran pretty good. About 2 weeks ago the vehicle started running rough while my wife was driving home. She made it home and I scanned the vehicle with my OBD2 scanner. The 0304 code popped up with Cylinder 4 misfire. I thought maybe we have a coil or sparkplug issue so I quickly changed out both parts. Scanned again and still have the same issue, nothing fixed. Realizing the issue is above my level of skill to diagnose and fix, I brought the truck to the shop. They diagnosed cylinder 4 as having 0 compression.

My question is if the lifter is shot and caused major damage, #1.What would be the cost to replace the engine? #2. If replacement is required should I buy a 6.2L engine that has the DOD/AFM deleted?

The lady at the shop threw out $15k to replace the engine. I see one I can buy for $7k with the DOD/AFM Deleted. Would there legitimately be $8k in labor?

Thanks

Shop time is about 15-16 hours on the previous generation. How much do they charge an hour or is the swap a flat rate job?

Where are you located?

@JrOnE Moved you here from Intro Section.
Welcome from Miami&Queens NY!

swathdiver said:

Shop time is about 15-16 hours on the previous generation. How much do they charge an hour or is the swap a flat rate job?

Where are you located?

Click to expand...

I'm the Kansas City, Mo. I'm not sure how she quoted me. She seemed to just throw out $15k without much explanation. I'll know a little more later today. They were digging into the engine today.

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving clarifying questions from the knowledgeable folks on this Forum.