Did you ever figure your seats out, i just got done installing mine in my 2007 silverado but i had to add about 10 or more extra wires to the passenger seat and about half that to the driver, i found all the diagrams i needed, which im going to add on here for other people in the future as i wasted a day sourcing through the wiring diagrams for the whole truck, just went to the dealer and reflashed the BCM with the vin from a 2009 tahoe but came up with faults and theft errors etc, must be cause the BCM has the incorrect vin number just wondering what the dealer has to do to program these in, they are unsure since its not something they have done before. hopefully someone out there can help. thanks