When I went to the dealer and fell in love with my 06 2500HD I had no idea about diesels. I just new I was getting a powerfull truck that was made right. Now I hear all this talk about 3rd quarter 06's being much better than my early 06. I just can't believe that I bought an 06 in 05 and I feel the truck is a year old and outdated already and it's still 9-16-05!!!!
Is this buyers remorse or what.

Don't feel stupid. The '06 LLY is a nice engine. Bigger transmission cooler than the 2001-2005 models, so the 6-speed Allison should not overheat (I hope). Bigger air filter system compared to the junk that was in the older DuraMaxs. If all you need is 310 HP, it is a good setup. On Tuesday, 9/13/05, I ordered a LBZ. I need the 360hp/650tq to tow with. A lot of people do not need that much power just to drive around in. Ted

I personally would rather have the LLY than the new LBZ. The lower compression ratio and tighter emmisions regulations will likely hurt fuel mileage on the new engine. The higher power output on the LBZ can easily be exceeded with even the mildest tuner on an LLY. If you have the LLY with the 6 speed Allison I think you have the best of both worlds. Just my opinion of course.

I personally would rather have the LLY than the new LBZ. The lower compression ratio and tighter emmisions regulations will likely hurt fuel mileage on the new engine. The higher power output on the LBZ can easily be exceeded with even the mildest tuner on an LLY. If you have the LLY with the 6 speed Allison I think you have the best of both worlds. Just my opinion of course.

I understand the emissions equipment, but does lower compression sacrifice mileage on a diesel motor? To be honest I would have thought it would be improved had I not read this.

The lower compr. ratio in the LBZ will allow a higher % of fuel to be burned so it's in effect MORE efficient. Driving style and situation will have a big impact on average mileage, tho. What should have the biggest impact on hwy mileage is the 6th speed in the auto. IMHO it would have the same effect on older motors w/ original compr. ratios.

The higher power output on the LBZ can easily be exceeded with even the mildest tuner on an LLY. If you have the LLY with the 6 speed Allison I think you have the best of both worlds. Just my opinion of course.


Sure, you can tune an LLY.
But... The LBZ also includes some internal engine beef the LLY doesn't... internal mods are always nice. ;)

When I went to the dealer and fell in love with my 06 2500HD I had no idea about diesels. I just new I was getting a powerfull truck that was made right. Now I hear all this talk about 3rd quarter 06's being much better than my early 06. I just can't believe that I bought an 06 in 05 and I feel the truck is a year old and outdated already and it's still 9-16-05!!!!
Is this buyers remorse or what.

You shouldn't at all feel bad about your truck. You have a 2006 HD D/A. I don't even have a truck right now because im saving up to buy a used DMAX. The LBZ hasn't even been out long enough to make a determination on whether its reliable or not. Your LLY probably has all/most of its bugs worked out from previous models + you got the 6 speed Allison.

You're gonna love your truck. You have an improved LLY engine. I just installed the Edge EZ (mild tuning module, $318 new) on my 05 LLY and now I have as much if not some more power than the LBZ will have. When Edge puts an EZ module out for your engine try it out, you really love your truck then!

The 06 is the best Duramax yet stock.

If you are leaving your truck stock, you got the best available.

I bought an 06 as well, and I'm very happy. I agree with the above members, you will be fine.

Just FYI...
I was NOT implying w/ my above posts that your '06 is not worth having. I agree... you got a great truck. I was just trying to clear up some other misconceptions.
:ro)

Ya if you keep waiting for the latess and greatest you'd never own a great truck. I ordered the 06 LBZ which will be totally dated by late spring 06 with the totally new 07's. Maybe the engine might somewhat be the same, but the body and frame will totally newly designed. I'm kinda new to this Duramax thing and I like the present 06 and 06+. Saw few bad pix of the 07's and the 07 Tahoe looks promising but there will probably be some major revisions the 1st couple of years. So I thought better go now while the gettin's good. In about 4 or 5 years when they get all the kinks worked out I'll be ready to buy again probably a year just before a even another body and styling change "DAMN AGAIN", hehe. We're all stuck in this endless cycle! Congrat's on your new rig, hope to be crusing with you soon!

SF

I've got a 'late model' LB7 and I'm quite happy. The early LLY's had their issues, as did the early 01's, and so will the LBZ's first out the door.

I feel no envy over the power improvements(thank you edge and diablosport) but I do envy the new tranny.

I ordered so that I would get the LLY.. Didn't want the growing pains of the LBZ..

My engine, LB7, is now 3 engines "out of date" and I love it. Don't worry about it. If you thought that way about computers, you'd be buying a new one every month. Enjoy, you made bought a great truck.

does anybody know, i would think 06 LLY's and LBZ would use same block except pistons and electronic controls to simplify production.

http://gm-trucks.com/home/content/view/227/1/

Thanks for all the feed back. I feel much better. I do love my truck. I can't expect to keep up with the latest and greates. Who can afford that kind of thinking. I also read about the faster glow plugs on the latter 06's but my manual states the same for my truck.

I've been a GM owner my entire life, and, if there's anything I know about GM, they have a philosopy called "value engineering". Value Engineering is quite different from lets say Toyota's philosophy of build for life.

Value Engineering takes a few things into account:

1. Average ownership time of GM vehicle
2. Stress/usability/knobology testing
3. Component quality

What this means is most GM vehicles are designed for about 5 years of ownership and are built to that spec.

Toyota tests to complete failure and builds their vehicles around that. That's the difference. I always owned GM cars, and will continue to, and yes, about everey five years I get a new one. Isn't that the irony?

Keeping up with the Jones's is expected with the GM Value Engineering philosophy.

With regard to the LLY VS LBZ nonsense, just keep in mind that the early LLY's were a complete disaster and that old value engineering thing will apply to the LBZ. It's designed to be crap at the onset and only get better year after year so that you're ready to trade in or sell out after the five years. I not really nuts... it just happens to be true.

Nice looking rig tentspike!!
I went with black also

SF

The lower compr. ratio in the LBZ will allow a higher % of fuel to be burned so it's in effect MORE efficient. Driving style and situation will have a big impact on average mileage, tho. What should have the biggest impact on hwy mileage is the 6th speed in the auto. IMHO it would have the same effect on older motors w/ original compr. ratios.

All else being equal, a higher compression ratio will yield higher thermal efficiency and better fuel efficiency than a lower compression ratio. I'm sure the reason they lowered the compression was to lower the combustion temperatures which will in turn lower NOx emmisions. Time will tell how the LBZs do mileage wise, but I would not be surprized to see a 1-2 MPG decrease compared to the LLYs.