Fixed the airbag. I used Alldatadiy’s troubleshooting guide and wiring diagrams and found it had an open wire, the dark brown one that goes from X1 pin A at the driver airbag to pin 8 on the SDM (SIR deployment module) under the driver seat. I used an appropriate dark brown wire and attached it at the 2 ends of the harness. I didn’t want to cut all the tape and loom off the harness in order to locate the exact break or cut. Hooked up the Tech2, cleared the codes and rechecked. The only one still there is for the driver seat sensor because the seat is out of the truck. DTC B0012 04 Driver Front Deployment Loop Stage 1 Open Circuit is no longer present for the first time in forever. Yay. Now I just have some reassembling to do.