Airbag System Startup After Crash/Rebuild

[swantzilla]

2009 Armada SE Vehicle was rear-ended and pushed into the car in front of me. Front airbags deployed and seatbelts locked up. I have had the seatbelts and controller rebuilt/reset. I installed a secondhand dashboard/airbag and drivers airbag. I am waiting for a new front impact sensor. It was not damaged but I feel better replacing it with new. Now to my question. Any precautions or tests I should perform before I reconnect the battery? I was looking for a startup procedure but Google is currently not my friend. Damage to the front and rear bumpers is minimal. No sheet metal damage.

[VStar650CL]

No special procedures needed, the Bag Brain will self-test as soon as you turn the ignition on after reconnecting. Of course reconnect with the key in the off position if it's a hard key and not I-key.