New Inline 6 Duramax Diesel suburban - Dodge Cummins Diesel Forum
2013-2018 General Discussion General Chit Chat About the 2013 model year differences 6.7L 4th generation Cummins - NO ADVERTISING -

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post #1 of 56 (permalink) Old 12-14-2019, 07:53 PM Thread Starter
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New Inline 6 Duramax Diesel suburban

Guys, I know this is a cummins forum but have yall seen the news for the 3.0 duramax thats an inline motor for the new suburbans....might mean a trade-in. Its about time they got in the inline diesel game.


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post #2 of 56 (permalink) Old 12-14-2019, 08:02 PM
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I know! Canít wait to see one. Wife is about due to replace her 2010 pathfinder with ~130k now... I hear theyíre looking at putting it in the Tahoe as well.


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post #3 of 56 (permalink) Old 12-14-2019, 08:12 PM Thread Starter
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I know! Canít wait to see one. Wife is about due to replace her 2010 pathfinder with ~130k now... I hear theyíre looking at putting it in the Tahoe as well.


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Yep might trade our 17 suburban if they look good and drive good and pricing is right


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post #4 of 56 (permalink) Old 12-14-2019, 09:09 PM
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Suburban has offered the V8 Duramax in new Suburbans. About $100k. Very special order. Only a few built each year.
I wouldn't think a 3.0 would be useful in an 6500 lb truck? Be nice for a grocery cart. With the cost of diesel fuel, and the cost of a Suburban...I dunno. They install similar sized V6 diesels in mini motorhomes and they are way slow. Maybe GM is creating a new smallish 'Suburban' for the engine?

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post #5 of 56 (permalink) Old 12-14-2019, 09:18 PM Thread Starter
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Suburban has offered the V8 Duramax in new Suburbans. About $100k. Very special order. Only a few built each year.
I wouldn't think a 3.0 would be useful in an 6500 lb truck? Be nice for a grocery cart. With the cost of diesel fuel, and the cost of a Suburban...I dunno. They install similar sized V6 diesels in mini motorhomes and they are way slow. Maybe GM is creating a new smallish 'Suburban' for the engine?

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It does make more torque than the 5.3 does that we have now. Im intrigued... especially since its an inline motor. It might turn out like the ram eco diesel and be a hunk a junk. They are advertising 33mpg hwy though. Im not worried about towing, got the 2500 for that.


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post #6 of 56 (permalink) Old 12-14-2019, 09:20 PM
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The engine is on the market in pickups. Never heard of it. Engine makes 277 HP at 3750 RPM and 460 lbs at 1500 RPM. That's about what a 6.0 and an old big block gas did. Low RPM diesel torque will feel good.
This thing is not designed to tow heavy toys.
All-new Tahoe and Suburban arrive in mid-2020

New chassis with independent rear suspension

Choice of two gasoline V8s or a turbodiesel I6

10-speed automatic transmission

Longer wheelbase, significantly roomier

More leg room and cargo room

Available air suspension and Magnetic Ride Control

More safety tech and connectivity

Pricing not yet announced
Let me help with this...$$$$$$



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post #7 of 56 (permalink) Old 12-14-2019, 09:32 PM
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Not for me. I like our 04 suburban. 200,500 miles and just put brakes on it for the first time and its fourth battery. Never an issue. Absolutely stone reliable.
That 3.0 engine is probably better in the colorado than it will be in a suburban loaded with people and stuff. It would be so much cheaper to buy an old suburban and Duraburb it with a 6.6. Or Cummins swap it.
GM needs to offer a 2500 Suburban with the L5P.
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post #8 of 56 (permalink) Old 12-14-2019, 09:55 PM
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I see fun times with improper fueling. Women (and some snowflakes) have screwed over many a Jetta. My wife did it to our Sportwagen. She didn't drive it. So no damage.
The 'burb will, no doubt, be a nice highway vehicle. Still, even at 33 mpg, the maintenance, cost of diesel, and initial cost of the burb...and with the rear independent suspension...? Seems an expensive toy.
If geared to tow, it won't get 33 mpg. Probably tow rating limited. Bet it's prox to $80k...or more.

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post #9 of 56 (permalink) Old 12-14-2019, 10:02 PM
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Don't mess around with no 3.0...
Duraburb 3500. This thing will pull. NO problem.

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post #10 of 56 (permalink) Old 12-14-2019, 10:10 PM
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10 Speed trans. It's the joint venture with Ford.

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post #11 of 56 (permalink) Old 12-15-2019, 12:45 AM
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Itís the same engine they are putting in the 1500 trucks. In the trucks itís the same up cost for the diesel as it is going with the 6.2l gas. So my guess the Tahoe suburban will follow suite. Same torque as the 6.2 with less hp, but much better fuel economy.
Tfl on YouTube has done some testing on this engine with great results. Seems like a much better outcome than fcaís 3.0 ecodiesel.


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post #12 of 56 (permalink) Old 12-15-2019, 01:05 AM
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if you can afford a diesel suburban at that cost, then the maint isn't a problem.
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