Frame Differences?

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,615
1,874
113
Mid Michigan
Adam, I moved your question into its own thread in Chassis.

You'd have to go back to the old DP days, when Ben made that thread comparing the two frames.
 
  • Like
Reactions: malibu795

1FastBrick

Well-known member
Dec 1, 2016
2,546
1,075
113
Junkyard
I believe they are similar between the GMT 800 and the GMT 900. I have seen a few guys with the 900 bed on the 800 frame and cab.

I know the Tow hooks and mounting points for the front bumper are different.
 

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
Figured the tow hooks and front bumper mounts as obvious points
I know the 06 and older ran SAE brake lines vs 07 newer ran metric.

picked up a '05 ECSB 4*4 frame tonight, wanted a ECLB but more involved to swap to that and get running
 

1FastBrick

Well-known member
Dec 1, 2016
2,546
1,075
113
Junkyard
Figured the tow hooks and front bumper mounts as obvious points
I know the 06 and older ran SAE brake lines vs 07 newer ran metric.

picked up a '05 ECSB 4*4 frame tonight, wanted a ECLB but more involved to swap to that and get running
Is this for repairing your rig?
 

pl_silverado

Active member
Jan 29, 2012
140
106
43
Figured the tow hooks and front bumper mounts as obvious points
I know the 06 and older ran SAE brake lines vs 07 newer ran metric.

That sums up pretty much all the differences. Don't worry much about the year, find the cleanest one you can and run with it.
 

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
Is this for repairing your rig?
Repairing the 09 LMM I bought end of February this year then wrecked it ~3 week later..
That sums up pretty much all the differences. Don't worry much about the year, find the cleanest one you can and run with it.
Seams I just need to cut the top part off and drill holes and add gusset in the frame horn and it will be pretty close..
I plan on running a DIY bumper from MOVE so any differences is kinda a mute point

IMG_20231008_112818368.jpgIMG_20231008_112731110.jpgIMG_20231008_112335412.jpgIMG_20231008_113706933.jpg
 

pl_silverado

Active member
Jan 29, 2012
140
106
43
Move bumper makes it even easier. Cut off the 01-07 mount entirely and make that new frame horn look like the lmm one. The LMM mounts bolt on and come as a kit with everything needed.
 

malibu795

misspeelleerr
Apr 28, 2007
8,241
550
113
42
in the buckeye state
Well cleaned most of anything lose off,
Then forgot temps are dropping below 60° non insulated shop makes it an issue painting. Might let it flash rust the POR-15 it in the spring...

IMG_20231008_162536946.jpgIMG_20231008_165631893.jpg
 

pl_silverado

Active member
Jan 29, 2012
140
106
43
Cheap oven cleaner takes that coating right off.

On another note, since you washed the loose stuff off you could just order the factory frame wax called nox rust from daubert chemical, spray it and get it back on the road.
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,615
1,874
113
Mid Michigan
Cheap oven cleaner takes that coating right off.

On another note, since you washed the loose stuff off you could just order the factory frame wax called nox rust from daubert chemical, spray it and get it back on the road.
Ive been on multiple Dmax forums for 20 years now. Thats the first time Ive seen anyone put a name to the coating that GM used on the frames.
Thank you for that.
 

1FastBrick

Well-known member
Dec 1, 2016
2,546
1,075
113
Junkyard
Yep. This stuff is as close to the factory stuff that I’ve ever found. I’ve used it on redoing a frame. Remains to be seen how it lasts.
How long ago did you apply it??? My OEM stuff is drying out and flaking off. I was considering something like this protect it until I do an actual frame off.
 

pl_silverado

Active member
Jan 29, 2012
140
106
43
Yep. This stuff is as close to the factory stuff that I’ve ever found. I’ve used it on redoing a frame. Remains to be seen how it lasts.

I sandblasted and epoxy coated my frame earlier this year. Ordered a case of this to put over the epoxy, but haven’t done it yet. It works great on freshening up older frames that have the dried out coating after scraping off the loose crap.
 
  • Like
Reactions: 1FastBrick