my 07 classic duramax was crashed and I am getting a new lmm gmc monday.


vehicles are a 2007 silverado 2500 hd cc LT3 duramax LBZ

and a 2007 1/2 GMC 2500 hd Ltz cc duramax LMM

I will be removing the exhaust DPF, cat and muffler and running straight pipe.

Since so much is the same on the lbz 07 classic and a 07 1/2 lmm, why couldn't I swap in my lbz ecm and have no DPF removal codes?

Only things I am wondering is

would it affect onstar? (both my 07 classic silverado and my new 07 1/2 gmc have onstar) both are lt3/ltz with sunroof, rear dvd.

the new lmm has navigation and remote start that the lbz did not have?

what about anti-theft fuel cut off crap, would I have to also swap the lbz body control module? (where is it located?)



so I am thinking about trying the ecm and bcm on the lmm monday and seeing what happens? it would be nice to use a hot+2 LBZ tune rather than the lmm PPE tune

I wonder if you can just change the vin on the lbz ecm and put it in the new truck. have you been to the dealer to get a wiring diagram to see if the pinouts are the same? I would imagine that this could work since they are very similar. I wonder if you have to disable the vats system as well to work on the new truck. This is a good idea I cant wait to hear your findings pleas post back what you find.

I wonder if you can just change the vin on the lbz ecm and put it in the new truck. have you been to the dealer to get a wiring diagram to see if the pinouts are the same? I would imagine that this could work since they are very similar. I wonder if you have to disable the vats system as well to work on the new truck. This is a good idea I cant wait to hear your findings pleas post back what you find.

I am not worried about warranty or different vin in the ecm, just running. I think any vats/theft problems should be solved by putting in the lbz bcm that matches the lbz ecm

the LMM has several systems that are different from the LBZ and I don't think that the LBZ ECM would work with it.

New Boreless Variable Vane Turbo
All-new, solenoid-controlled, seven-hole injectors
Electronically controlled intake throttle upstream from the turbocharger
Larger EGR Cooler & EGR controls
Diesel Particulate Filter (DPF)
Electrically controlled engine cooling fan
Even of you remove the DPF, you still need to figure out how to control all the other stuff.

the BCM also takes different programming.

Its the same computer, with a different flash, If you have EFIlive just try and copy and paste the desired changes over from LBZ os to LMM os and see what happens.

the LMM has several systems that are different from the LBZ and I don't think that the LBZ ECM would work with it.

New Boreless Variable Vane Turbo
All-new, solenoid-controlled, seven-hole injectors
Electronically controlled intake throttle upstream from the turbocharger
Larger EGR Cooler & EGR controls
Diesel Particulate Filter (DPF)
Electrically controlled engine cooling fanEven of you remove the DPF, you still need to figure out how to control all the other stuff.

the BCM also takes different programming.

ok, sounds like a bad idea, will await LMM programming:(

LBZ ECM wont work. Class 2 data on the LBZ was replaced with low speed/high speed GMLAN on the LMM. You wouldnt have any gauges, VSS, PASSLock, no 4wd, and a bunch of other things...

The LBZ and LMM have COMPLETELY different electrical systems. Nothing will ever interchange between the two; not only are the plugs themseleves all different, but the communications are not compatible. It would be like trying to plug a flashlight into a 3 phase industrical equipment recepticle.

ben

Ben is all over it, may as well and try to use it in a ford....

Thanks Ben. :)

I knew there was something else different, but I couldn't remember what it was. I did know that the software for all the modules is also different.

Yes, GM is gradually moving away from Class 2 on their new vehicles.

I think the trailblazer is the only GM vehicle still using class 2 and the 03-07classic silverado/sierra style electrical architecture.

Hummer H2 dropped it for the '08's, the migrated it to the GMT-900 style architecture.

what is class 2????

if you have access to a program like "all data" look up the pin connectors for the ecm and see if the wires are in the same locations. best bet is they are, even still you might need an after market tune to get some things to work. that was the case with my thunderbird, i took out the 4.6 2v and put a slightly modified 4.6 4v in. . . (but i went from eeciv with obd1 to eecv with obd2) so not sure. but get the two pin connection diagrams. thats your best bet!

[quote= It would be like trying to plug a flashlight into a 3 phase industrical equipment recepticle.

ben[/quote]

Ben, can you not just get a bigger hammer to make it work?:D

if you have access to a program like "all data" look up the pin connectors for the ecm and see if the wires are in the same locations. best bet is they are, even still you might need an after market tune to get some things to work. that was the case with my thunderbird, i took out the 4.6 2v and put a slightly modified 4.6 4v in. . . (but i went from eeciv with obd1 to eecv with obd2) so not sure. but get the two pin connection diagrams. thats your best bet!


All Data will not have the information for the 07.5s.

Sam

if you have access to a program like "all data" look up the pin connectors for the ecm and see if the wires are in the same locations. best bet is they are, even still you might need an after market tune to get some things to work. that was the case with my thunderbird, i took out the 4.6 2v and put a slightly modified 4.6 4v in. . . (but i went from eeciv with obd1 to eecv with obd2) so not sure. but get the two pin connection diagrams. thats your best bet!

the engine wiring is the same. The data bus that the ECM communicates to the body with is different.

Will the engine technically run with an LBZ ECM? Yes, I suppose so.

But it wont start (no passlock verification, which happens thru data)
You wont have any guages
no 4wd
no trans shifting
other problems....

these trucks are MUCH more advanced than 1995 thunderbirds...its not as simple as matching TPS to TPS, CKP to CKP, etc... anymore ;)