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Old 08-21-2016, 02:49 PM   #1
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Just bought a 07 Duramax--133000 mi

I have just bought this truck. Have an 08, 5.3. Pull a 21FBRS now. Wanting to go with a little bit bigger trailer. All that being said, been to Fl once, out west twice, and the 5.3 and headwinds & hills SUCK. Diesels going by me like I'm tied to a post. I really didn't want to stick a lot of money in a diesel truck, never had one before. But as I do more investigating into the LMM duramax's, there seems to be a lot of minor issues, DPF, & EGR mostly. That being said, durability seems to be excellent, and for an 07, truck looks like new--AZ truck.
Any comments pro or con---LEMENO!! "PEACE" Olgeezer
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Old 08-21-2016, 03:28 PM   #2
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Hi,

Very happy with my '09 LMM. I'm up to 106k miles with maybe half towing a 33RL Silverback.

FWIW.

Rich Phillips
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Old 08-21-2016, 03:57 PM   #3
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We love our 2007 classic body style Duramax LBZ! Not much different from the LMM which has the DPF system added (you can delete that though). We have 125k on ours. Just finished replacing most hoses, serpentine belt, belt tensioner/idler pulleys, and tie rod ends. Rides like a new truck again. Have not had one problem with it that wasn't normal maintenance. Good choice you made. Enjoy! We still have folks who come up to us at truck stops and offer to buy it
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Old 08-22-2016, 07:55 AM   #4
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I would add an exhaust brake. The 2005-2007.5 GM 2500 and 3500 Duramax have an exhaust brake programmed into the ECM. From factory the GM HD trucks during these years only came with transmission braking while tow/haul mode engaged.

GM used the same ECM in the HD(2500,3500) and Topkicks. The Topkicks came from factory with Exhaust brake and transmission brake. All you need to do is add a switch to ground on one ECM plug pin in the HD Trucks to activate exhaust brake AND transmission brake on the HD truck. The HD already has the exhaust brake program, but no switch.

I bought a $3 switch and went to GM dealership for ECM pins, 2 hours later I have an exhaust brake. I"ll post a pick when I find it on the computer.

Lots on info on this at Diesel Place: Chevrolet and GMC Diesel Truck Forums and Chevy and GMC Duramax Forum
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Old 08-22-2016, 09:14 AM   #5
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Hi Wildcat,

My 09 LMM doesn't have the fluid system.

That's one of the reasons I bought it when I did -- before DPF systems were going to be added.

FWIW.

Rich Phillips
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Old 08-22-2016, 09:42 AM   #6
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Wildcat, same here. In the past couple of months I've had three people come to me while fueling or walking into a store asking if I will sell my truck.
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Old 08-22-2016, 10:34 AM   #7
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Quote:
Originally Posted by richp View Post
Hi Wildcat,

My 09 LMM doesn't have the fluid system.

That's one of the reasons I bought it when I did -- before DPF systems were going to be added.

FWIW.

Rich Phillips
Right, you don't have DEF, but I'm betting you do have the DPF (diesel particulate filter) with the regen cycle. It's the torpedo looking device in your exhaust. Introduced to Duramax in 2007.5 LMM. DEF (the fluid) was added to the LML in 2011.
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Old 08-22-2016, 10:37 AM   #8
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Quote:
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Wildcat, same here. In the past couple of months I've had three people come to me while fueling or walking into a store asking if I will sell my truck.
Yep, I always enjoy those encounters. Some of the offers I actually considered, but the new trucks just cost too much and there's nothing wrong with mine. I really enjoy having no payments and a dependable truck.
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Old 08-22-2016, 10:51 AM   #9
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Hi Wildcat,

You are right -- I have the "afterburner". I need to read more carefully.

Captain, my long time RV dealer pestered me for years to buy my 2001 LB7, because he knew how well I took care of it. When I got my 09, he picked it up and is still very happy with it.

FWIW.

Rich
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Old 08-22-2016, 01:19 PM   #10
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Click image for larger version

Name:	073.jpg
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ID:	118130I understand the "want" of a diesel truck to pull with... there is no comparison on the way they can do hills....
I've had every Duramax from 2003 until 2011... all had the Allison Transmission and they are the best tranny's there are!
The good thing about the Chevy Duramax is there are plenty of people around that can work on them.... and they can be made to really run good... The Chevy looks nice and I really like them... as I've said we have had many of them in my business and they are all 1-tons... we use them to haul our stair systems to Portland Oregon from Salem (100 miles round trip)
If you added all the miles on all the trucks together, you can't get to 300,000 miles collectively. All are maintained by ASE Chevrolet techs in Salem Or.


The bad....
I don't want to get into a pi$$ing match with other diesel guys on here, but you asked about them....
They are all garbage.... get ready to shell out serious money...
Turbo's, EGR's, Head's, Injectors, Sensors, Fuel filters, Fuel pumps, Manifolds, Pre-heaters, Valves,... if it is a part of the motor, we have seen problem after problem on every duramax except the 2003.
The down-time alone is worth never owning one. I can't tell you every problem we've had since I'd be writing all day... I have known people that are very happy with theirs and they love them...
We only have one now... it is a 08 GMC with the Duramax and Allison 4x4 1-ton that I use to pull my 18 Desert Fox toy hauler... Sturgis, Moab, and to Elk Camp...
Last year on my way to Sturgis it didn't make it 100 miles before it blew both head gaskets.... we completed the trip but we went through probably 50 gallons of anti-freeze...
I'd just had about $5000 worth of suspension work, new tires, shocks, and axel seals, brakes, etc put into it... 85,000 miles when the Chevy mechanic in Missoula Mt we stopped at to get it checked out asked if I wanted to keep the truck or sell it for scrap.
When I got back to Salem, I took it to Complete Power Systems and they re-decked the heads and put new head gaskets on it... they added a EFI Live system and got me back on the road for another $11K...
Today the truck is used sparingly but there isn't a lot on the road that can touch it and it pulls twice as hard as anything else I've ever driven.... but...
I just put almost 17K on a 08' with 85,000 miles on it...
We still have to deal with bad mileage... and expensive up-keep...
The cost of ownership is not worth the price to play IMO...
But you asked so that's my experience... I've owned more duramax's than anyone on here I'm pretty sure... like I said, we used them for the company I run in Salem... I know of which I speak....
We now run Freightliner and International 5-ton trucks...
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