Highest miles so far on the 3.0L Diesel?

Dude5XRacing · January 10, 2023

I have 37xxx on mine, check engine light came on before Christmas and had the code read and was a glow plug on cylinder #2. Dealer I purchased it from couldn't get me in until a week later. The day before I was to take it in the check engine light went out. Took it in anyway and they found that the glow plug broke off and into the cylinder and it damaged the piston and cylinder wall. It never made any noise. They are replacing the entire engine. Thank God it's under warranty.

4banger · January 10, 2023

neighbours truck was just fixed on the def system again and on way back to town about 1.5 hours out it failed again, he's about done and thinking of heading back to ford as he is mostly a ford guy, has 2 built mustangs and old ford half ton and the built bmw m40, so 3 our of his 4 rides are fords, this chev was for his company truck and his partner is the one who has the deleted ecodiesel that's been reliable enough once the def system failed and they deleted it, I'm telling him to go gm 2500/3500 gas as I'm seeing a lot of guys in the patch moving to that as a reliable and cold weather option over the diesels, well I'm trying to get him to try the 2.7 instead but I think he's thinking heavy duty to yank their little trailer and tools around the oil patch

Dirk13 · January 10, 2023

1 hour ago, 4banger said:

neighbours truck was just fixed on the def system again and on way back to town about 1.5 hours out it failed again, he's about done and thinking of heading back to ford as he is mostly a ford guy, has 2 built mustangs and old ford half ton and the built bmw m40, so 3 our of his 4 rides are fords, this chev was for his company truck and his partner is the one who has the deleted ecodiesel that's been reliable enough once the def system failed and they deleted it, I'm telling him to go gm 2500/3500 gas as I'm seeing a lot of guys in the patch moving to that as a reliable and cold weather option over the diesels, well I'm trying to get him to try the 2.7 instead but I think he's thinking heavy duty to yank their little trailer and tools around the oil patch

I don’t know, I think his problem is more with GM service rather than the 3.0. They obviously didn’t fix the right thing or there’s another thing that’s causing the def injector to fail. If you kept having the same component fail over and over again would you just keep replacing it or would you look for the cause?

There are enough of these trucks on the road and next to zero mentions online about def injector failures for me to know there’s not an inherent problem with the def injector itself. He’s got some other problem the “techs” reading the computer haven’t identified or fixed yet. Sucks for him.

redwngr · January 10, 2023

On 12/11/2022 at 4:21 PM, 3.0L_Johnny said:

It's a different fuel map for when the truck is doing an active regen. You're hearing injector noise, it's not anything to do with any of the other moving parts. To be honest, it's my #1 complaint about an otherwise awesome engine. Regens happen way too often, probably because the DPF is small and either GM didn't want to pony up for a bigger one, or there were packaging considerations since the DPF is under the hood.

Regen on the LM2 takes about 12 miles.

My '18 L5P was a little over 20 miles.

My '11 LML was about 30 miles.

Miles between regens depends on what the truck is doing -- just like with the 6.6's.

I find that working it harder ( highway speeds, especially towing) it will be usually be longer between regens.

I use an idash so that I don't 'miss' it being in regen, and log the regen intervals.

(yes, imo, it's an entertainment device...)

The longer miles between regens occured during longer periods of freeway runnng - usually towing an enclosed tandem trailer.

The last 3 are the exception. They were a roundtrip freeway run from near Detroit MI to near Raleigh NC.

Long term average regen interval for this truck is about 300 miles