Has anyone heard that the new HD Silverado and Sierra trucks will not have the new GMT 900 frame, at least initially? That they will be using a modified GMT 800 frame. If this is true, its really disappointing that a whole new truck is not going to have the fully boxed frame.-:t

Other than the first '07 HD's (the 'classics'), will be on the old frame and the old body style - hadn't heard anything about two different frames for the 900 style. Can't really see how they could do that.

Other than the first '07 HD's (the 'classics'), will be on the old frame and the old body style - hadn't heard anything about two different frames for the 900 style. Can't really see how they could do that.
Recently, I got a 'ALL NEW SILVERADO' sales book at a Chev. dealer. On page 10, they say 'NEW Frame, new full-boxed frame is thicker and 230 per cent torsionally stiffer than the previous generation. Tells a lot. Also, 'The rear frame is also fully boxed back to the spare tire cross member, where it becomes C-channel. The specs in the back of the book says this is a 1500 they are talking about. Does the bigger trucks have a boxed frame too?

Should be interesting to see how the full boxed frame works out , bet it rides like a Ford .

Stiffer frame allows the suspension to work better, may even ride&handle better than 800

'The rear frame is also fully boxed back to the spare tire cross member, where it becomes C-channel. The specs in the back of the book says this is a 1500 they are talking about. Does the bigger trucks have a boxed frame too?
The 900HDs don't get a (nearly) fully boxed frame like the 1500s, nor a carry-over 800 frame eventually to be replaced with an all-new design, either. This has been covered pretty extensively in the "New Vehicle Information" section, for example: http://dieselplace.com/forum/showpost.php?p=1380467&postcount=8

Thanks for the info Elvis.

The 900HDs don't get a (nearly) fully boxed frame like the 1500s, nor a carry-over 800 frame eventually to be replaced with an all-new design, either. This has been covered pretty extensively in the "New Vehicle Information" section, for example: http://dieselplace.com/forum/showpost.php?p=1380467&postcount=8
OK, thanks for info on the bigger trucks...

Ive seen it in person, the frame on the 800/900 HD are identical. The only difference is the body mounts and a modification for the location of the part. filter. Otherwise, you have the exact same chassis.

Ive seen it in person, the frame on the 800/900 HD are identical. The only difference is the body mounts and a modification for the location of the part. filter. Otherwise, you have the exact same chassis.



Pictures Please...
:)

http://dieselplace.com/forum/showpost.php?p=1365285&postcount=66

Has anyone heard that the new HD Silverado and Sierra trucks will not have the new GMT 900 frame, at least initially? That they will be using a modified GMT 800 frame. If this is true, its really disappointing that a whole new truck is not going to have the fully boxed frame.-:t

Even if the new GMT900 HD frames are slight modifications of the GMT800 frames what is so bad about them?

Everyone seems to be so upset but I never heard what the design or structural problems are with the 800 frames?

Ive seen it in person, the frame on the 800/900 HD are identical. The only difference is the body mounts and a modification for the location of the part. filter. Otherwise, you have the exact same chassis.

He speaks the truth. I saw 4 trucks at the Texas state fair and it's just new bodies on old frames. Nothing wrong with the GMT800 chassis it's just that a huge portion of their marketing is focused on a completely redesigned truck. I would be pissed if I did not know upfront it is just a new body style on the old frame. Plus I would really be pissed if I bought an 07 and in 08 or 09 they do release the GMT900 chassis.............talk about a bastard truck no one will want.

Ive seen it in person, the frame on the 800/900 HD are identical. The only difference...
So it's identical, but different?

I saw 4 trucks at the Texas state fair and it's just new bodies on old frames.
Adding to the confusion are those who have "seen" the new HDs and base their entire assessment upon a cursory look underneath them. If someone wants to say, "they looked the same" that's one thing. But to claim they're "identical" based on a cursory look at a frame with a truck body mounted on it is another.

GM's dimensional drawings (previously referenced) shows there are at least a few other minor dimensional differences. There may be other differences that GM hasn't mentioned in their press releases, but until the detailed frame illustrations are published, the general public probably won't know what they are without comparing two bare frames.

In the meantime, it is correct to say that the "new" 900 HD frame appears to be almost identical to the "old" 800 HD frame; rather than completely redesigned like the 900 LD frame.

In the meantime, it is correct to say that the "new" 900 HD frame appears to be almost identical to the "old" 800 HD frame; rather than completely redesigned like the 900 LD frame.

The way I see it, this is suppose to be a completely new platform GMT800 to GMT900 and just swapping bodies, tweaking a few chassis dimensions, moving a few body mounts, and a few crossmembers hardly constitutes a completely new platform. There are already talks of changing the HD chassis in 08-09 to update. Now why in the world would GM update a completely new platform one year after the release?:rolleyes:

These first trucks will be victims of the rush job GM has made to get a new truck out on the market. You cannot push up a project 12-18 mnths and not expect compromises in design and engineering. It appears the chassis will be the compromise in the first year or two.

There are already talks of changing the HD chassis in 08-09 to update. Now why in the world would GM update a completely new platform one year after the release?
The 900 HD chassis will not be changed to a completely new design in a year or two. Yet with each retelling, this rumor - unsubstantiated by any GM publication I've seen - continues to live.
http://dieselplace.com/forum/showpost.php?p=1380467&postcount=8

:confused: If its true about a new platform in '08 or '09, that really sucks! I don't want to wait another year to buy a new truck. Its not so much that there is anything wrong with the GMT 800 platform, its just GM changing it a year or two after the new body comes out. Maybe I should look at a Dodge again!

You would go buy a peace of JUNK Dodge over a rumor about the Frame?

The 900 HD chassis will not be changed to a completely new design in a year or two. Yet with each retelling, this rumor - unsubstantiated by any GM publication I've seen - continues to live.
http://dieselplace.com/forum/showpost.php?p=1380467&postcount=8

I see you are on GMInside as well, LOL! :)

I think we both agree: What GM releases in the first year of the HD platform will be "revised" within a year or two. The extent of this revision is unknown and for me it is worth waiting to see what pans out. In the past, a platform change has meant much more than just a body. In this case it appears the HDs are nothing more than a new body and with thier current marketing efforts I think it is deceptive.

Time will tell............

Not over a rumor. I would first wait to verify that GM is going to change the platform on the new HDs in '08 or '09. I don't know that Dodge is a piece of junk at this point. Their engine is going to have similar hp and torque ratings, they have a boxed frame and they are going to have a Japanese six speed also, supposedly. I would obviously rather have a GM product or I wouldn't be here, but I don't really want to buy a new 2007 for 35 to 45k and then have them change it the following year.

The 900 HD chassis will not be changed to a completely new design in a year or two. Yet with each retelling, this rumor - unsubstantiated by any GM publication I've seen - continues to live.
http://dieselplace.com/forum/showpost.php?p=1380467&postcount=8

Aww ya'll picked me for that one :D

I've just heard those rumers all over too, that was why I was asking. I do not really care one way or another, about all I'll be towing with mine (when EVER I get it ) will be my Jeep, and house hold goods durring a PCS move. so I do not need the SUPER HEAVY DUTY TOWING FRAME LOL.
Would a Coil spring front be nice, sure, but then all the lifts that "may" carry over would NOT be availible to us then.

Thats why if you plan to keep a truck longer than 3-4 years you never buy a new truck the first year of a new body style. Already we are seeing different things going to happen with the frame.

I think we both agree: What GM releases in the first year of the HD platform will be "revised" within a year or two. The extent of this revision is unknown and for me it is worth waiting to see what pans out.
I have no idea why you think that. There is NO indication that the 900 HD frame will be revised or redesigned in a year or two.

The 900HDs don't get an "all-new" mostly boxed design like the 1500s, nor a carry-over 800 frame eventually to be replaced with an all-new design, either.

The "new" GMT900 HD frame is almost identical to the "old" GMT800 HD frame. This "new" GMT900 HD frame is already on the pilot-build GMT900 HDs and will also be on the very first production HDs sold to the public next spring.

I have no idea why you think that. There is NO indication that the 900 HD frame will be revised or redesigned in a year or two.

But they are doing just that for the 2500 Subs/XLs. GM admits it. Why do you think the HDs will not see the same revision? Why do it for the Subs/XLs but not the very popular HDs? Just does not make sense to me.:confused:

If they don't evenually upgrade/change the chassis then they should not claim the new HDs as an entirely redesigned platform.

But they are doing just that for the 2500 Subs/XLs. GM admits it.
What is the source of this? Provide a link if possible.