I've recently swapped a L77 and 6L80 from a 2012 caprice into a 2008 silverado WT that had a 4L60. I finally got it driving but I cant pull up any other modules with my scan tool besides the PCM and TCM. I'm trying to troubleshoot some other issues with the airbag system. The caprice vin is still in the PCM. I've looked into swapping the vin. It looks like I need a vin from a 10-12 model silverado to be compatable with this PCM. I was just curious if this would allow me to see the rest of the modules with my scan tool or not. The canbus structure in the caprice and 07-13 silverados are totally different. It seems like the PCM may be confused. I appreciate any input.