NHTSA Complaint #11617299 — 2010 CADILLAC CTS

Airbag warning light and Service Air Bag on dash. Code B0087-00 Left Rear SIS. Replaced sensor, still getting warning. Sensor is in LR door. Research revealed possible known issue with bending fatigue from routine door open/close motion and subpar wire size/material causing wire failure. Opened wire harness at pillar and green/black wire was completely separated at typical bending point. Light blue wire was not visibly broken (insulation still intact) but the wire within was broken upon removal of insulation. These are the two wires (light blue and green/black) to the impact sensor. Please investigate GM use of substandard or undersize wiring in entire SRS system especially at bending fatigue potential failure points. Three pictures attached - one picture showing initial finding of green/black broken wire but light blue still visibly intact (insulation only), one picture showing same in close up, one picture showing both wires are not intact (light blue wire was inspected further and determined insulation intact but wire within was not intact) and insulated separated with fingernail pressure only. Wires should not fail within typical lifetime of a vehicle. Uncertain on operation of system, but could short between two wires and/or grounding cause airbag to deploy without accident/at random causing personal injury to occupants and/or an accident because of random deployment? Date of incident is when wiring issue was discovered and pictures taken upon discovery.