3.0 duramax

[beerrun]

Anyone have one? Please tell the good bad and ugly? If you could go back would you buy that motor again or go with a 5.3 or 6.2

 

[81Sprint]

My warehouse guy has a GMC Sierra AT4 with the baby duramax, loves it. Has never had an issue, i believe it is a '20. He doesn't tow heavy, mainly jet skis and off road toys.

 

[Xtrmwakeboarder]

3.0 Duramax Questions

About to take delivery of a 2023 Yukon with the baby Duramax and wondering what you guys are doing for a warm up routine, routine maintenance, etc. This is obviously going to be a MOMUV so it will be used a lot for low mileage school drop off and grocery runs. I know that modern diesels (at...

www.riverdavesplace.com

 

[OldSchoolBoats]

Been great so far. No complaints. If buying new, just make sure oil is filled to correct level and you don't have a bad cam position sensor.......

This was from Temecula to OC

 

[manxman]

There great. Have had 2 of them. I only sold the first one because the guy gave me $5k more than I paid for it, after putting 17k miles on it. I bought another in February and have 6k miles on it and have been averaging 25 mpg overall. Tows the boat great.

 

[beerrun]

Been great so far. No complaints. If buying new, just make sure oil is filled to correct level and you don't have a bad cam position sensor.......

This was from Temecula to OC

View attachment 1239837

Are you using alot ou oil? Like 1 quart per 1000 miles?

 

[OldSchoolBoats]

Are you using alot ou oil? Like 1 quart per 1000 miles?

I only have 1200 miles on it so far

 

[beerrun]

I only have 1200 miles on it so far

I'm reading that they are using oil

 

[Xtrmwakeboarder]

Been great so far. No complaints. If buying new, just make sure oil is filled to correct level and you don't have a bad cam position sensor.......

This was from Temecula to OC

View attachment 1239837

So what is the story? Did your tahoe break already?

 

[PlanB]

We went gas on the wife's 22 Burb but the next one will be diesel if the 3.0 ends up being a good motor. I did not want to be an early adopter like was the case with our 6.0 excursion that was a POS.

 

[JFMFG]

Have the 3.0 love it. Came from the 6.2. Won’t go back. I tow a 24 ft enclosed and the magic from storage to the ramp 0 issues. I’m lifted on 35s also. Last week didn’t calculate my weight right picking up new catalogs ended up loading it down to about 13k lbs I know stupid mistake. Towed it back to the shop stopped etc no issues.

 

[Xring01]

Due your research… There is a pump in the Transmission, that has to have a belt replaced. Pending the year you have, its scheduled maintenance at 100K or 150K miles.

So, you have to pull the tranny to replace the belt.

THATS THE REASON, I WOULD NOT EVEN CONSIDER A 3.0 Duramax. Imagine what thats going to cost at $200/hour of shop time.

 

[LargeOrangeFont]

Have the 3.0 love it. Came from the 6.2. Won’t go back. I tow a 24 ft enclosed and the magic from storage to the ramp 0 issues. I’m lifted on 35s also. Last week didn’t calculate my weight right picking up new catalogs ended up loading it down to about 13k lbs I know stupid mistake. Towed it back to the shop stopped etc no issues.

Hear those tribal drums over the next rise?

The Karenhood of Perpetual Towing Ratings is coming for you.

 

[beerrun]

Have the 3.0 love it. Came from the 6.2. Won’t go back. I tow a 24 ft enclosed and the magic from storage to the ramp 0 issues. I’m lifted on 35s also. Last week didn’t calculate my weight right picking up new catalogs ended up loading it down to about 13k lbs I know stupid mistake. Towed it back to the shop stopped etc no issues.

How many miles o your truck? Are you using alot of oil like a quart every 500-1000 miles? DEF use high?

 

[JFMFG]

How many miles o your truck? Are you using alot of oil like a quart every 500-1000 miles? DEF use high?

I have 22k on it. It’s a 2021. No issues burning oil. But it does drink def every 3k miles or so

 

[NeedlesRat]

Have the 3.0 love it. Came from the 6.2. Won’t go back. I tow a 24 ft enclosed and the magic from storage to the ramp 0 issues. I’m lifted on 35s also. Last week didn’t calculate my weight right picking up new catalogs ended up loading it down to about 13k lbs I know stupid mistake. Towed it back to the shop stopped etc no issues.

Good looking truck. Did you have the fender flares color matched or did they come white?

 

[JFMFG]

Good looking truck. Did you have the fender flares color matched or did they come white?

Mine came white.

 

[EmpirE231]

Due your research… There is a pump in the Transmission, that has to have a belt replaced. Pending the year you have, its scheduled maintenance at 100K or 150K miles.

So, you have to pull the tranny to replace the belt.

THATS THE REASON, I WOULD NOT EVEN CONSIDER A 3.0 Duramax. Imagine what thats going to cost at $200/hour of shop time.

That interval was 150k and on the newer LZO is 200k. Most likely by that point it’s about time for a trans rebuild anyway.

 

[DoughBallin14]

Not sure why there are so many guys passing on the 3.0 duramax just because of the oil pump belt.

Gm increased the change interval to 200k and the cost my friend just paid in Temecula to do it was $1350, parts were just under 300 bucks.

I also feel like most people here seem to be replacing vehicles before 150k-200k mile mark anyways.
Hell in perspective that's cheaper then a set of wheels or tires that most have no complaints about buying when they want to switch it up on their trucks.

 

[hman442]

Here's a pretty good explanation of the belt, click on the video, which leads to a GM engineer video.

About That 3.0L Duramax Wet Oil Pump Belt

There's been some talk around our shop of late regarding the oil pump belt on the 3.0L LM2 "Baby" Duramax now powering the 2020-newer Silverados/Sierra 1500s, as well as 2021 Tahoe, Suburban, Yukon and the Escalades.

mobilediesel.co

 

[Chili Palmer]

$1200 - $1500 to change the oil pump belt is nothing on a diesel - I came from an LML Duramax and every service was at least $1000 after 100k miles. Once this engine is out of warranty and maintenance Items start coming into play there will be sticker shock amongst all these first time diesel onwners.

 

[Xring01]

Not sure why there are so many guys passing on the 3.0 duramax just because of the oil pump belt.

Gm increased the change interval to 200k and the cost my friend just paid in Temecula to do it was $1350, parts were just under 300 bucks.

I also feel like most people here seem to be replacing vehicles before 150k-200k mile mark anyways.
Hell in perspective that's cheaper then a set of wheels or tires that most have no complaints about buying when they want to switch it up on their trucks.

Truck, Not me, 250,000miles minimum.
Unless my needs change, which just happened. Sold my 2002 GMC DMax 2500 with 265,000 miles ish, it towed my offshore 12000lb boat Several years ago.
Bought a 2021 Chev 1500 4x4, because its was enough to tow my lake boat, and didnt think I would ever need to tow more than 7500lbs
Sold a 2021 Chev 1500 4x4 with a. 5.3L with 29,300 flawless miles.

Replaced it with a 2016 GMC 2500 6.6L 4x4 thats fully deleted, and pretty modded.. Its one bad beast, custom CP pump, lift pump, exhaust, fully deleted, with a ton of other towing mods.

The only reason why I sold one for the other… decided I wanted to buy a toyhauler. So, I needed a 2500…
If not for that, I would have ran the 2021 for a very long time.

Regarding the 3.0 DMax, even with a 200k mile maintenance interval, I still wouldnt buy it. Why, because if you decide to sell it with 150k miles, thats going to be a detractor for the people who are looking to buy it, meaning reduces in market value and more importantly demand.

The 5.3 is a better choice. It doesnt have DEF fluid, or pre catalytic convertors, or ________________, extra systems that can fail. The 5.3 does have known issues, but those if they surface should surface while the unit is still under warranty.

Pros of the 3.0, better fuel economy, but higher fuel costs, and DEF, and more systems that have potential failures.

Pros of the 5.3, roughly the same hp/tq of the 3.0, less systems that can fail, pretty damn reliable, but can have lifter problems. But I outlined that problem above. If you have it, it typically surfaces when the car is under warranty.

Again, all of this is my opinion/needs, everyone is entitled to theirs.

 

[DoughBallin14]

Truck, Not me, 250,000miles minimum.
Unless my needs change, which just happened. Sold my 2002 GMC DMax 2500 with 265,000 miles ish, it towed my offshore 12000lb boat Several years ago.
Bought a 2021 Chev 1500 4x4, because its was enough to tow my lake boat, and didnt think I would ever need to tow more than 7500lbs
Sold a 2021 Chev 1500 4x4 with a. 5.3L with 29,300 flawless miles.

Replaced it with a 2016 GMC 2500 6.6L 4x4 thats fully deleted, and pretty modded.. Its one bad beast, custom CP pump, lift pump, exhaust, fully deleted, with a ton of other towing mods.

The only reason why I sold one for the other… decided I wanted to buy a toyhauler. So, I needed a 2500…
If not for that, I would have ran the 2021 for a very long time.

Regarding the 3.0 DMax, even with a 200k mile maintenance interval, I still wouldnt buy it. Why, because if you decide to sell it with 150k miles, thats going to be a detractor for the people who are looking to buy it, meaning reduces in market value and more importantly demand.

The 5.3 is a better choice. It doesnt have DEF fluid, or pre catalytic convertors, or ________________, extra systems that can fail. The 5.3 does have known issues, but those if they surface should surface while the unit is still under warranty.

Pros of the 3.0, better fuel economy, but higher fuel costs, and DEF, and more systems that have potential failures.

Pros of the 5.3, roughly the same hp/tq of the 3.0, less systems that can fail, pretty damn reliable, but can have lifter problems. But I outlined that problem above. If you have it, it typically surfaces when the car is under warranty.

Again, all of this is my opinion/needs, everyone is entitled to theirs.

I can agree on all your points i myself got rid of my heavily enjoyed lmm that had a major efi live / mike L “diet”and was a blast to drive let her go at 285k and ended up in a temporary at the time 02 2500hd 8.1 truck with 100k.
Was just waiting for market to relax and new interiors for the 24 trucks to come out which I might honestly pass on the diesel this time so i dont deal with any def or epa equipment issues. I know the right people to get around that but dont wanna fork out that money, plus they have been doing a lot of random epa checkpoints near me.

Some people wanna stay away from the 3.0 and some love it, just like any gasser with the afm and lifter issues or 6/8 speed trans issues. We all hope it falls under warranty either way haha.

 

[H20 Toie]

My Buddy had one, used a lot of oil, took it in 3 different times, they said nothing wrong, so at 20k miles he sold it

 

[Chili Palmer]

Guy at work has a 21 Silverado with the 3.0 and loves it except for the other day - he was driving home on the freeway and all of a sudden it went into limp mode, 5mph and his DEF light and a message came on that said DEF Fault and 5mph enabled. How can this be safe? He had it towed to the dealer and $1500 later he found out his dog had chewed through a harness under his truck. $1500 for a 12” harness. Without all the smog BS I’m sure it’s a great engine, but the emissions just make these diesels too unreliable for me.

 

[Bigbore500r]

Due your research… There is a pump in the Transmission, that has to have a belt replaced. Pending the year you have, its scheduled maintenance at 100K or 150K miles.

So, you have to pull the tranny to replace the belt.

THATS THE REASON, I WOULD NOT EVEN CONSIDER A 3.0 Duramax. Imagine what thats going to cost at $200/hour of shop time.

Service is at 150k. As ridiculous as it sounds......the labor hours to remove and replace the trans to do the timing belt is less than to disassemble the front of the motor to do a timing belt.

10hrs of labor per GM "book" for service, and roughly $200 of parts.

Now - why did they have to do a belt, instead of a "set it and forget it" chain? - That's the BS! Lol

Not bad though - 150k service interval is more than acceptable, theres alot of vehicles requiring similar service at much sooner intervals than that

 

[Bigbore500r]

Guy at work has a 21 Silverado with the 3.0 and loves it except for the other day - he was driving home on the freeway and all of a sudden it went into limp mode, 5mph and his DEF light and a message came on that said DEF Fault and 5mph enabled. How can this be safe? He had it towed to the dealer and $1500 later he found out his dog had chewed through a harness under his truck. $1500 for a 12” harness. Without all the smog BS I’m sure it’s a great engine, but the emissions just make these diesels too unreliable for me.

Sounds like they raped him good for a few wires going to his DEF tank......jesus

 

[Bigbore500r]

$1200 - $1500 to change the oil pump belt is nothing on a diesel - I came from an LML Duramax and every service was at least $1000 after 100k miles. Once this engine is out of warranty and maintenance Items start coming into play there will be sticker shock amongst all these first time diesel onwners.

Right? The scheduled replacement of the oil pump belt is the least of the worries..........
It's all the potential failures of injection pumps, injectors, DEF shit, DPF shit, VGT turbos, EGR coolers, etc etc etc etc etc etc that you worry about, and they can pop up at ANY time, ANY mileage......

The new diesels are awesome, but you gotta pay to play - and the smart move is to pay up front, buy new or CPO, and keep under warranty. Sell or trade in before warranty is up. You have to treat them like a BMW M5 - ain't nobody trying to keep that around as a high mileage "forever" vehicle, except some dude with a youtube channel ......

If your mechanically inclined and like to roll the dice, its your discretion.
If your the average joe - they're a ticking time bomb that can blow your wallet out of your pants!

 

[Done-it-again]

Sounds like they raped him good for a few wires going to his DEF tank......jesus

Or make sure your dog don't eat F'ing wires...

 

[LargeOrangeFont]

Or make sure your dog don't eat F'ing wires...

My 4Runner is also unreliable. A rodent ate through 5 of the 6 the fuel injector wires once.

 

[Done-it-again]

My 4Runner is also unreliable. A rodent ate through 5 of the 6 the fuel injector wires once.

Sometimes you chock it up as a lessoned learned.

 

[LargeOrangeFont]

Sometimes you chock it up as a lessoned learned.

2 lessons.

- A 4Runner can drive down and back up a driveway on 1 cylinder.

- Always carry so you can shoot on sight.

 

[J DUNN]

I have 3 vehicles with the 3.0. Love them all. Oldest one has 25k miles so still new but loving the gas mileage and range. Seems like I'm never filling them up they run so long on the 24 Gal tank. I've gotten 700 miles on a 24 gal tank on the way home from Powell. Insane. Add up all that savings over and over again and you can pay for the belt change with money to spare.

 

[EmpirE231]

my neighbor has about 68K miles on his LM2 and love it (nothing other than oil changes and tire rotations / fuel filter)

My LZO is at 1500 miles so far, and so far so good.

I was at the dealer having my painted to match fender flares installed and there was a nice whit lifted newer SLT in there. complimented the guy on the lift... he said 5.3, less than 20k miles and the motor might be toast due to lifter failure