2007 Trailblazer inputting correct VIN

[Hog]

Hey guys, happy New Year.

I have a buddy that has a 2007 Trailblazer that has come stock with the 5.3 V8.

He has added:

The RPO's I added are
AAB - Memory Driver convenience package (seats, mirrors)
DL2 - O/S Mirror
KA1 - Heated seats
U2k - Digital Audio

Mechanically this was all plug and play. The wire harnesses had all the necessary wiring already there. I believe that is because I have the higher end LT model

My next mod is to ditch the 4x4 and add the SS AWD transfer case.

To make these options function, he had to add a VIN from an AWD SS Trailblazer.

Question. How does he retain these RPO functions while using the original VIN for his Trailblazer?

I was thinking he could use the VCI # system via Techlink and his local dealership, but they are not familiar with doing this.
Je currently has deleted DOD as well, and this has been taken care of via the PCM calibration.

Aside from using the GM techline, is there a way via aftermarket tuning suites to accomplish this ?

He is located in the USA abd is will to pay any sort of incurred fees. Any friendly techs out there?

Thanks Gents, let me know if you need more info.

peace
Hog

[Hog]

Any input from anyone?

thanks

peace
Hog

[lionelhutz]

How'd you use the VIN to add the options? By using a TechII and the VIN to re-program the BCM?

[mecanicman]

I'll have to pull up some diagrams and do some reading, but why not just remove the atc and treat like 2wd? Use your tuning software to remove codes.

[roughneck427]

I have a subscription to the GM stuff an a mongoose cable and I have a tech2. I know when I log on there is a area to check to enable certain functions id have to have the vehicle on hand to see if it gave that option. The only other deal I would say through the GM SPS treat it as a bcm replace read the file with a tech2 or mongoose then when it asks "Is this vin correct" then change it. Im in central CA but a crap shoot of where he is. Do you have access to a GM approved J2534 cable such as a mongoose if so pm me??

[1project2many]

Your friend may get stuck. I tried to add cruise to our shop truck. The BCM recognizes cruise switch input but does not send "cruise enable" to ecm. Local dealer tried to flash bcm with new calibration but is told there's no software for this truck with cruise. So it is there, but unusable.

[Hog]

I have a subscription to the GM stuff an a mongoose cable and I have a tech2. I know when I log on there is a area to check to enable certain functions id have to have the vehicle on hand to see if it gave that option. The only other deal I would say through the GM SPS treat it as a bcm replace read the file with a tech2 or mongoose then when it asks "Is this vin correct" then change it. Im in central CA but a crap shoot of where he is. Do you have access to a GM approved J2534 cable such as a mongoose if so pm me??

Unfortunatley he is in Colorado. Thanks for your support though.

peace
Hog

[Hog]

I'll have to pull up some diagrams and do some reading, but why not just remove the atc and treat like 2wd? Use your tuning software to remove codes.

That is possible, but he wants the VIN from his T-blazer in the PCM that will allow the 4 new options to be enabled.



peace
Hog

[Hog]

How'd you use the VIN to add the options? By using a TechII and the VIN to re-program the BCM?

GM dealership dropped in a TBSS calibration that his lcal pick and pull supplied to enable the options.
All wiring was already in place from factory.

peace
Hog