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Posted: 6/14/2014 7:14:41 AM EST
[Last Edit: 6/15/2014 1:47:02 AM EST by TexasTony]
Thoughts on 2006 GMC 3500 6.6 LBZ?

It is before the regeneration model, but what are the other major shortfalls in it?
Link Posted: 6/14/2014 4:28:22 PM EST
We blew the head gaskets on ours. I'm pretty sure it's a common problem.
Link Posted: 6/14/2014 6:03:46 PM EST
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Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.
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No, no its not.
Link Posted: 6/14/2014 6:33:40 PM EST
Link Posted: 6/14/2014 7:23:37 PM EST
[Last Edit: 6/14/2014 7:24:55 PM EST by Jday]
Originally Posted By TexasTony:
Thoughts on 2006 GMC 3500 6.6 LBZ?

It is before the regeneration model, but what are the other major shortfalls in it?
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Pretty widely regarded as the best Duramax. Although the LMM (2007.5-2010) is the same engine, it has a dpf you have to deal with. I personally think the LBZ is the best all around truck you could buy.

There are no major shortfalls. If it's been maintained, it will be a great truck.

INB4 people say is a chunk of scrap metal because it has IFS.
Link Posted: 6/15/2014 1:25:49 AM EST
Thank you. I just wish the interior was updated...
Link Posted: 6/15/2014 3:08:24 AM EST
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Originally Posted By TOTHEMAX:


Nope.

The LBZ is the best Duramax out there. No DEF, plenty of power, 6spd allison, etc.
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Originally Posted By TOTHEMAX:
Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.


Nope.

The LBZ is the best Duramax out there. No DEF, plenty of power, 6spd allison, etc.



This. Best duramax to buy.
Link Posted: 6/15/2014 5:29:22 AM EST
Link Posted: 6/15/2014 5:52:39 AM EST
This is now an LBZ pic thread!

Link Posted: 6/15/2014 7:32:47 AM EST
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Originally Posted By TexasTony:
Thank you. I just wish the interior was updated...
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I found the interior of my 03 to be more comfortable than my 09. Now I want a '15 Denali LML
Link Posted: 6/16/2014 2:55:14 AM EST
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Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.
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My uncle's had both heads replaced within 65k mi.
Link Posted: 6/16/2014 3:23:45 AM EST
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Originally Posted By usp4u:



My uncle's had both heads replaced within 65k mi.
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Originally Posted By usp4u:
Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.



My uncle's had both heads replaced within 65k mi.

Did uncle have any engine mods?
Link Posted: 6/16/2014 4:31:17 AM EST
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Originally Posted By eracer:

Did uncle have any engine mods?
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Originally Posted By eracer:
Originally Posted By usp4u:
Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.



My uncle's had both heads replaced within 65k mi.

Did uncle have any engine mods?


zero, old man truck used to do old man things.
Link Posted: 6/16/2014 4:54:30 AM EST
Link Posted: 6/16/2014 6:16:38 AM EST
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Originally Posted By TOTHEMAX:


Anythings possible but this was not common. I think the early gen duramax had some head issues but they snubbed that out pretty fast. What year was your uncles?
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Originally Posted By TOTHEMAX:
Originally Posted By usp4u:
Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.



My uncle's had both heads replaced within 65k mi.


Anythings possible but this was not common. I think the early gen duramax had some head issues but they snubbed that out pretty fast. What year was your uncles?


06 or 07
Link Posted: 6/16/2014 10:58:43 AM EST
[Last Edit: 6/16/2014 11:00:57 AM EST by itstock]
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Originally Posted By eracer:

Did uncle have any engine mods?
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Originally Posted By eracer:
Originally Posted By usp4u:
Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.



My uncle's had both heads replaced within 65k mi.

Did uncle have any engine mods?


Late 06 here, stock work truck, ate the gaskets at 30k. I believe it was enough of a problem for an extended warranty on the head gaskets.
Link Posted: 6/18/2014 1:12:43 AM EST
Was it a factory recall, or are they guaranteed past a certain point?

(As for upgrades, I mean the quality of the knobs and plastics).
Link Posted: 6/18/2014 6:05:37 AM EST
They blow head gaskets. They come off warped up like a pretzel too. 0.020" rainbow and 0.002 to 0.004 twist on every one I pull.

I do not have a solid cause as to why it happens though.
Link Posted: 6/18/2014 7:29:35 AM EST
I have two very close friends with 06's. They both love em. Tow regularly and one has close to 300k. Great trucks.
Link Posted: 6/18/2014 9:11:21 AM EST
The LBZ is the best Duramax engine available. It's mature, backed by the 6spd instead of the 5spd Allison, doesn't have DPF, solved the high-heat issue the LLY had, the injector issues the LB7 had, and had a glut of internal updates that make it stronger.

Originally Posted By itstock:
We blew the head gaskets on ours. I'm pretty sure it's a common problem.
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No it's not a common problem. It did sometimes manifest itself with the LLY, made for 2004.5 to 2005. Shortest run Duramax engine produced so far.
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