Hi Guys!
It's been a while since I've posted. Work has been crazy, and haven't had much time for hobbies, but I've found some extra time lately, and I also found an ACC Radar for a nice price, which brings up this question...
I know that it's not advised to play with the high speed network, as it's crucial to the car running and working correctly. I'm aware that the EBCM, TCM, and ECM are one this network, and I know that screwing something up with it could cause serious issues. With that being said, i'm willing to take the risk, as the wiring isn't anything I haven't dealt with in my career.
My question comes in the form of programming. If i get the HUD, and ACC module, I know i'll have to at the very least get the IPM reprogrammed to allow me to control cruise settings, and to allow the HUD to display the correct information. I'm also aware the EBCM, TCM, and ECM MAY have to be reprogrammed, as the EBCM will have to handle braking requests from the ACC module, and the ECM will be getting throttle requests from it as well, and the TCM receives downshift requests from the ACC module.
This is where my understanding stops being so crystal clear... I'm aware that to reprogram this change, my local dealer (that is willing to try, for a hefty fee) will have to get a VCI number from GM. From what I understand, GM will not issue a VCI for an invalid configuration (Such as the 5 speed transmission attached to the Northstar.) From what I can find, if the equipment combination is authorized by GM (such as a dealer added item, like larger wheels or a different differential) it can be added through a VCI, which GM will provide.
If i add the ACC module and HUD to the car, will my dealer be able to reprogram the car? If so, will I need the VIN of a different car, or a VCI that has been issued to a different car with the exact options as mine? Are there any other software issues i may run into here, or is this something that is completely impossible?
I'm asking this on a few different forums for a few different cars, so if i hear back and have success, i'll post back here. Or if it won't work, i'll still post back just to confirm. But i figure here is a good place to start, since we have some guys that have tried stuff like this before.
It's been a while since I've posted. Work has been crazy, and haven't had much time for hobbies, but I've found some extra time lately, and I also found an ACC Radar for a nice price, which brings up this question...
I know that it's not advised to play with the high speed network, as it's crucial to the car running and working correctly. I'm aware that the EBCM, TCM, and ECM are one this network, and I know that screwing something up with it could cause serious issues. With that being said, i'm willing to take the risk, as the wiring isn't anything I haven't dealt with in my career.
My question comes in the form of programming. If i get the HUD, and ACC module, I know i'll have to at the very least get the IPM reprogrammed to allow me to control cruise settings, and to allow the HUD to display the correct information. I'm also aware the EBCM, TCM, and ECM MAY have to be reprogrammed, as the EBCM will have to handle braking requests from the ACC module, and the ECM will be getting throttle requests from it as well, and the TCM receives downshift requests from the ACC module.
This is where my understanding stops being so crystal clear... I'm aware that to reprogram this change, my local dealer (that is willing to try, for a hefty fee) will have to get a VCI number from GM. From what I understand, GM will not issue a VCI for an invalid configuration (Such as the 5 speed transmission attached to the Northstar.) From what I can find, if the equipment combination is authorized by GM (such as a dealer added item, like larger wheels or a different differential) it can be added through a VCI, which GM will provide.
If i add the ACC module and HUD to the car, will my dealer be able to reprogram the car? If so, will I need the VIN of a different car, or a VCI that has been issued to a different car with the exact options as mine? Are there any other software issues i may run into here, or is this something that is completely impossible?
I'm asking this on a few different forums for a few different cars, so if i hear back and have success, i'll post back here. Or if it won't work, i'll still post back just to confirm. But i figure here is a good place to start, since we have some guys that have tried stuff like this before.