Match the part number of your original BCM to insure compatibility
When the BCM is replaced, the SIR warning indicator may remain ON SOLID (code:B1001)
For 2003-2005 vehicles, V.T.D relearn might be required through GM website and GM scan tool or J2534 to clear code B1001.
For 2006+ vehicles, "Setup SDM Primary Key" relearn with a scan tool like TECH2 will clear the code. Instructions for SDM will be provided.