6.2L or Duramax reliability

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

TollKeeper

Full Access Member
Joined
Feb 21, 2010
Posts
3,048
Reaction score
6,069
Location
Brighton, CO
I would buy one, I drive right at 17.1 miles one way to work. 10 miles of that is interstate. Would almost be a perfect scenario for me.

If the seats in these current generation trucks were any good.. I would buy one. But the seats are garbage. slabs of bricks might be more comfortable.
 

DuraYuk

Full Access Member
Joined
Sep 17, 2022
Posts
841
Reaction score
603
This engine isn't new. There are plenty of trucks out there with tons of miles. You don't hear much about the emmissions controls being problematic. Track record so far for lm2 is pretty damn solid. But if I have an issue I'll be sure to post about it.
But you promise to let us know when you have an issue that's out of warranty and how much it cost to fix, right?
 

DuraYuk

Full Access Member
Joined
Sep 17, 2022
Posts
841
Reaction score
603
How many hundreds of thousands of miles has this Yukon traveled
The lm2 isn't new. It's been out a few years now. Quite a few trucks are out of warranty. It has a pretty solid track record. Probably most reliable engine gm makes currently.
 

Vladimir2306

Full Access Member
Joined
May 18, 2023
Posts
473
Reaction score
473
The lm2 isn't new. It's been out a few years now. Quite a few trucks are out of warranty. It has a pretty solid track record. Probably most reliable engine gm makes currently.
Don't take the topic aside. It's not about them. It's about the Yukon ... That's when he will travel at least 100 thousand miles. Then we will discuss, but for now this is a meaningless conversation
 

UsualSuspect

Full Access Member
Joined
Feb 21, 2022
Posts
243
Reaction score
159
Location
SoCal
I have owned many GM diesels over the years. My first was a 6.5 diesel, ran great, gave it to one of my kids, who drove it for 230,000 before he sold it, only minor maintenance. I bought a 2007 6.6 LBZ Duramax, which was designed by Isuzi and GM, and you can find parts for them at an Isuzi dealership. I sold it to a friend, it now has 317,000 on it, no major issues, and he and his wife are getting ready to head to Florida next month for the winter. My current truck is an L5P, still an Isuzi design, and I will likely give it to one of the kids when I replace it.
Now for the 3.0L LM2. It's design comes from the Opal 2, 3 and 4 cylindar diesels you see around Europe. It was designed in Turin, Italy. The highest mileage 3.0 in our fleet is a 2020, and it has a little over 100,000 on it. It burns about 3/4 quart of oil according to the guy that drives it, and there has been no downtime on it other than regular maintenance. It will be replaced with a 2024 as we only keep vehicles 3 or 4 years.
Neither of the engines share their blocks with any other GM engine. Both the 6.6 and 3.0 use the same oil and fuel filters.
Our Yukon will be kicked down to a salesperson in 2026, wife will get a new one. It will have a diesel in it.
 

TollKeeper

Full Access Member
Joined
Feb 21, 2010
Posts
3,048
Reaction score
6,069
Location
Brighton, CO
I mentioned in another thread that I have a buddy that has 2 of the diesel 3.0 in his e$cort oversize business. When I talked to him last a few months ago, one had 120kish and the other was 150kish. One has more miles as he uses that one to take everyone to the hotels, bars, food, and parts run for the big rig. He has had no issues out of them, other than parts shortages after he hit a deer and it took months to get fixed. He rented a Ford F-150 and hated it. Mileage was nearly 1/2 of what he was getting with the 3.0. If memory serves, he is getting 37mpg out of them.

I firmly believe that the GM 3.0 diesel is likely the best engine to come out of GM since the 3800/4.3. But thats comparing apples to oranges. It could be the best engine made by the big 3 since the Jeep 4.0.
 

Forum statistics

Threads
132,465
Posts
1,868,757
Members
97,177
Latest member
Gdeck97
Top