All I can find is this....
From PTdoityourself.net
"In PT's with side airbag systems, the side impact module is called the Side Impact Airbag Control Module (SIACM). The right side SIACM controls the right seat airbag. The left side SIACM controls the left seat airbag. The SIACM modules cannot be interchanged and are located in the left and right B pillars, which are adjacent to the front seats. They are only found in PT's with the side airbag systems. Each SIACM contains two accelerometers, both accelerometers must agree in order to deploy the seat airbag. In the event of a side impact, the appropriate SIACM will send an electronic signal to its airbag, deploying the airbag. The SIACM communicates with the Occupant Restraint Controller (ORC) via the PCI data bus circuit.
We have an OE Restraint System guide in the Pit area on the site, which explains the system in detail and includes replacement procedures for all of the modules. However, to complete the installation, you would need a DRB scan tool and Body Diagnostic Procedures manual. Although it is not a difficult installation, there is a matter of safety and liability involved, and we suggest that only qualified trained technicians handle airbag repair. Oddly, many mechanics have little or no formal training. "
So it looks like you're gonna have to take it somewhere.....
btw here is the link...
ptdoityourself.net PTDIY.net - PT Cruiser Technical Library Part Forty Four Q&A 1076 - 1100